Prof. Cunlin Zhang Profile

Prof. Cunlin Zhang

at Capital Normal Univ

SPIE Involvement:

Conference Chair | Author | Editor

Publications (207)

Proceedings Article | 8 November 2024 Poster + Paper

Poster + Paper

Nondestructive testing of murals in situ by infrared thermal imaging

Guanglei Zhu, Ruiyuan Niu, Li Wang, Yong Lei, Liang Qu, Guanghua Li, Ningchang Shi, Yan Jing, Ma Zhenzhen, Guan Wang, Yi He, Xiaoli Li, Lichun Feng, Ning Tao, Jiangang Sun, Cunlin Zhang

Proceedings Volume 13247, 132470L (2024) https://doi.org/10.1117/12.3036447

KEYWORDS: Thermography, Tomography, Nondestructive evaluation, Inspection, Humidity, Pigments, Infrared radiation, Temperature metrology, Lamps, Infrared imaging

Read Abstract +

Proceedings Article | 11 October 2024 Paper

Paper

Terahertz continuous-variable quantum key distribution in atmospheric environment: theory and performance analysis

Dongyun Sun, Hailin Guo, Yatao Cheng, Yitong Chen, Zijian Gu, Zhe Yang, Cunlin Zhang

Proceedings Volume 13287, 1328705 (2024) https://doi.org/10.1117/12.3036646

KEYWORDS: Continuous variable quantum key distribution, Antennas, Terahertz radiation, Absorption, Signal attenuation

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

PXIe-based 230 to 300GHz terahertz MSK modulated communication system

Jiahui Wang, Zhuoyu Zhang, Yunchuan Liu, Hongcheng Yang, Wenyi Zhang, Bo Su, Cunlin Zhang, Jingsuo He

Proceedings Volume 12776, 127760M (2023) https://doi.org/10.1117/12.2687263

KEYWORDS: Telecommunications, Modulation, Wireless communications, Transceivers, Signal generators, Reliability, LabVIEW, Internet of things, Eye, Digital modulation

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

Terahertz time-domain spectral signal noise reduction analysis based on DG-SSA-VMD algorithm

Hao Guan, Zhenwei Zhang, Cunlin Zhang, Yuejin Zhao, Jing Xu

Proceedings Volume 12776, 1277619 (2023) https://doi.org/10.1117/12.2688912

KEYWORDS: Terahertz spectroscopy, Interference (communication), Denoising, Tunable filters, Quartz, Signal processing, Signal detection, Smoothing, Reflectance spectroscopy, Signal to noise ratio

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

250GHz metasurfaces directional reflection device based on a cross structure

Wenyi Zhang, Cuiling Zhang, Zhuoyu Zhang, Weizhu Chen, Ziqi Liu, Jingsuo He, Cunlin Zhang

Proceedings Volume 12776, 127760T (2023) https://doi.org/10.1117/12.2687156

KEYWORDS: Terahertz radiation, Reflection, Phase modulation, Modulation, Electromagnetic radiation, Metals, Telecommunications, Refraction, Radio propagation, Phase shift keying

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

Path loss and multipath channel characteristics models in a street canyon for outdoor 220 to 330GHz communication based on ray tracing

Hongcheng Yang, Zhuoyu Zhang, Wenyi Zhang, Cuiling Zhang, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 12776, 127760U (2023) https://doi.org/10.1117/12.2687225

KEYWORDS: Ray tracing, Terahertz technology, Data transmission, 3D modeling, Wireless communications, Transmitters, Terahertz radiation, Receivers, Molecular bridges, Microwave radiation

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

Performance analysis of baseband signal processing technology for 300GHz terahertz communication

Zhuoyu Zhang, Jiahui Wang, Wenyi Zhang, Qingyuan Yao, Jingsuo He, Cunlin Zhang

Proceedings Volume 12776, 127760S (2023) https://doi.org/10.1117/12.2686802

KEYWORDS: Terahertz technology, Telecommunications, Signal processing, Wireless communications, Modulation, Atmospheric propagation, Atmospheric modeling, Modulation frequency, Digital signal processing, Design and modelling

Read Abstract +

Proceedings Article | 26 November 2023 Poster + Paper

Poster + Paper

Removing resonant noise in terahertz permittivity spectra of material based on CWT-ex-VMD method

Zhenwei Zhang, Hao Guan, SiYi Han, Jing Xu, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 12776, 1277613 (2023) https://doi.org/10.1117/12.2687587

KEYWORDS: Wavelets, Terahertz radiation, Radar imaging, Radar, Optical transmission, Modal decomposition, Materials analysis, Interference (communication), Denoising

Read Abstract +

SPIE Journal Paper | 13 September 2023

Study on terahertz absorption characteristics of bovine serum albumin aqueous solution via microfluidic technology

He Yang, Bingxin Yan, Yuhan Zhao, Bo Su, Shengbo Zhang, Cunlin Zhang

OE, Vol. 62, Issue 09, 094104, (September 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.9.094104

KEYWORDS: Terahertz radiation, Absorption, Molecules, Solids, Vibration, Biological samples, Microfluidics, Molecular interactions, Hydrogen, Absorption spectrum

Read Abstract +

Proceedings Article | 31 May 2023 Paper

Paper

Active modulation of multiple metamaterial induced transparences in terahertz region

Huiwen Shi, Longyu Shi, Xuteng Zhang, Pujing Zhang, Jinyu Chen, Mengyuan Wang, Huijuan Sun, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12711, 1271105 (2023) https://doi.org/10.1117/12.2683140

KEYWORDS: Terahertz radiation, Silicon, Electrical conductivity, Resonators, Transmittance, Terahertz metamaterials, Split ring resonators, Electric fields, Modulation, Transparency

Read Abstract +

Proceedings Article | 31 May 2023 Paper

Paper

Dual-modulation terahertz device based on amplitude and frequency in VO2 hybrid metamaterial

Longyu Shi, Huiwen Shi, Xuteng Zhang, Wanlin Liang, Suqi Zhang, Huijuan Sun, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12711, 1271106 (2023) https://doi.org/10.1117/12.2683141

KEYWORDS: Terahertz radiation, Terahertz metamaterials, Modulation, Gold, Electromagnetic metamaterials, Imaging spectroscopy, Tunable metamaterials, Phase shift keying, Vanadium, Quantum amplitude

Read Abstract +

Proceedings Article | 31 May 2023 Paper

Paper

Active and passive modulation of dual metamaterial induced transparency in terahertz regime

Xuteng Zhang, Yuwang Deng, Longyu Shi, Huiwen Shi, Pujing Zhang, Zailin Wang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12711, 1271107 (2023) https://doi.org/10.1117/12.2683535

KEYWORDS: Windows, Terahertz radiation, Transparency, Modulation, Silicon, Split ring resonators, Electrical conductivity, Electric fields, Terahertz metamaterials, Design and modelling

Read Abstract +

Proceedings Article | 31 January 2023 Paper

Paper

Terahertz wave generation and detection using liquid water

Minghao Zhang, Wen Xiao, Cunlin Zhang, Liangliang Zhang

Proceedings Volume 12505, 1250515 (2023) https://doi.org/10.1117/12.2664559

KEYWORDS: Terahertz radiation, Liquids, Plasma, Plasma generation, Crystals, Signal detection, Laser crystals, Laser beam diagnostics, Femtosecond phenomena, Signal processing

Read Abstract +

Proceedings Article | 16 December 2022 Presentation + Paper

Presentation + Paper

Ultrahigh modulation enhancement in all-optical THz modulators integrated with gold nanobipyramids

Pujing Zhang, Jinyu Chen, Qingli Zhou, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 12324, 123240A (2022) https://doi.org/10.1117/12.2656048

KEYWORDS: Modulation, Metamaterials, Modulators, Silicon, Transmittance

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

Electromagnetic induced transparency from interlayer coupling of asymmetric split ring resonators

Peng Zhan Li, Jin Yu Chen, Zai Lin Wang, Pujing Zhang, Yuwang Deng, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12324, 123240T (2022) https://doi.org/10.1117/12.2642160

KEYWORDS: Metamaterials, Transparency, Silicon, Gold, Split ring resonators, Lithium, Terahertz radiation, Terahertz metamaterials, Electromagnetism, Plasmonics

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

Gouy phase shift of terahertz pulses observed using a water column as a probe

Yemin Li, Danni Ma, Cunlin Zhang, Liangliang Zhang

Proceedings Volume 12324, 1232416 (2022) https://doi.org/10.1117/12.2656226

KEYWORDS: Terahertz radiation, Phase shifts, Wave propagation, Image resolution, Tomography, Terahertz spectroscopy, Spectroscopy, Signal detection, Optoelectronics

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

LOS and NLOS channel models for indoor 220-330GHz communications based on ray tracing

Pandeng Wang, Hongcheng Yang, Cuiling Zhang, Jiahui Wang, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 12324, 1232415 (2022) https://doi.org/10.1117/12.2651175

KEYWORDS: Non-line-of-sight propagation, Signal attenuation, Reflection, Ray tracing, Receivers, Terahertz radiation, Absorption, 3D modeling, Transmitters, Wireless communications

Read Abstract +

Proceedings Article | 16 December 2022 Presentation + Paper

Presentation + Paper

Study on terahertz spectra of traditional Chinese medicine tablets with porous and non-porous structures

Xu Li, Yanbing Bai, Yuanfeng Guo, Zining Wang, Yulei Shi, Jian Zuo, Cunlin Zhang

Proceedings Volume 12324, 123240J (2022) https://doi.org/10.1117/12.2643845

KEYWORDS: Tablets, Absorption, Terahertz radiation, Refractive index, Terahertz spectroscopy, Spectroscopy, Terahertz technology

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

Coherent detection of broadband terahertz pulses using ethanol-water mixtures

Wen Xiao, Minghao Zhang, Liangliang Zhang, Cunlin Zhang, X.-C. Zhang

Proceedings Volume 12324, 123240U (2022) https://doi.org/10.1117/12.2642165

KEYWORDS: Terahertz radiation, Bioalcohols, Signal detection, Liquids, Millimeter wave sensors, Laser beam diagnostics, Plasma, Crystals, Signal processing, Polarization

Read Abstract +

Proceedings Article | 16 December 2022 Presentation + Paper

Presentation + Paper

Nonlinear response of liquid water induced by terahertz pulses

Hang Zhao, Yong Tan, LiangLiang Zhang, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 12324, 123240B (2022) https://doi.org/10.1117/12.2651598

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

Polarization insensitive tunable terahertz coding metasurface based on vanadium dioxide

Zailin Wang, Pengzhan Li, Jinyu Chen, Wanlin Liang, Zhanyi Wu, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12324, 123240S (2022) https://doi.org/10.1117/12.2642057

KEYWORDS: Terahertz radiation, Metals, Reflectivity, Phase shift keying, Vanadium, Gold, Dielectrics, Polarization, Optical simulations, Reflection

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Presentation + Paper

Poster + Presentation + Paper

Study of different types of hydroxypropyl celluloses (HPC) based on terahertz time-domain spectroscopy (THz-TDS)

Jiayu Yan, Zining Wang, Yuanfeng Guo, Yulei Shi, Jian Zuo, Cunlin Zhang

Proceedings Volume 12324, 123240Y (2022) https://doi.org/10.1117/12.2643698

KEYWORDS: Terahertz radiation, Absorption, Terahertz spectroscopy, Refractive index, Spectroscopy, Beam splitters, Polymers, Off axis mirrors, Mirrors, Phonons

Read Abstract +

Proceedings Article | 16 December 2022 Poster + Paper

Poster + Paper

Modulation of electromagnetically induced transparency based on bright-bright mode coupling in asymmetric split ring resonators

Jinyu Chen, Zailin Wang, Pengzhan Li, Pujing Zhang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 12324, 123240V (2022) https://doi.org/10.1117/12.2642166

KEYWORDS: Terahertz radiation, Resonators, Split ring resonators, Modulation, Metamaterials

Read Abstract +

Proceedings Article | 8 July 2022 Paper

Paper

A study on the quantitative relationship between the gray value of active terahertz images and transmission thickness

Fengxia Zhu, Hongfei Zhang, Zhilong Li, Moxuan Yang, Yuanmeng Zhao, Cunlin Zhang

Proceedings Volume 12284, 122840B (2022) https://doi.org/10.1117/12.2616565

KEYWORDS: Data modeling, Terahertz radiation, Cameras, Error analysis, Millimeter wave imaging, Statistical modeling, Mathematical modeling, Image processing, Semiconducting wafers, Neural networks

Read Abstract +

Proceedings Article | 8 July 2022 Paper

Paper

Application of BDS taming clock in high-speed THZ-TDS

Hongfei Zhang, Fengxia Zhu, Yi Liu, Yuanmeng Zhao, Cunlin Zhang

Proceedings Volume 12284, 122840A (2022) https://doi.org/10.1117/12.2616551

KEYWORDS: Clocks, Crystals, Terahertz radiation, Satellites, Oscillators, Receivers, Signal processing, Atomic clocks, Rubidium, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 24 November 2021 Paper

Paper

Terahertz characteristics of amino acids based on microfluidic technology

Ping Ye, Yizhou Yang, Bo Su, Cunlin Zhang

Proceedings Volume 12061, 120611B (2021) https://doi.org/10.1117/12.2606615

KEYWORDS: Absorption, Terahertz radiation, Microfluidics, Liquids, Solids, Terahertz spectroscopy, Molecules, Terahertz technology, Hydrogen

Read Abstract +

Proceedings Article | 24 November 2021 Paper

Paper

Terahertz spectra of sodium carboxymethyl cellulose and guar gum

Haiyun Huang, Siyu Shao, Guoyang Wang, Cunlin Zhang

Proceedings Volume 12061, 120611F (2021) https://doi.org/10.1117/12.2606707

KEYWORDS: Terahertz radiation, Microfluidics, Hydrogen, Molecules, Liquids, Transmittance, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 24 November 2021 Paper

Paper

A study on the terahertz nondestructive testing of foam sandwich structure composites based on morphological filtering

Zhilong Li, Jian Zuo, Yuanmeng Zhao, Zhongde Han, Zhihao Xu, Yunzhang Zhao, Chao Yang, Weidong Hu, Cunlin Zhang

Proceedings Volume 12065, 1206538 (2021) https://doi.org/10.1117/12.2606883

KEYWORDS: Foam, Composites, Adhesives, Binary data, Image filtering, Nondestructive evaluation, Signal detection, Image processing, Imaging systems, Terahertz technology

Read Abstract +

Proceedings Article | 28 October 2021 Paper

Paper

Measurement of woods complex permittivity in 220-325 GHz band

Ji Cao, Rui Jia, Jing Xu, Zhenwei Zhang, Cunlin Zhang

Proceedings Volume 11906, 119061K (2021) https://doi.org/10.1117/12.2604057

KEYWORDS: Silicon, Semiconducting wafers, Dielectrics, Free space, Terahertz radiation, Antennas, Network security, Electromagnetism, Wave propagation, Radio propagation

Read Abstract +

Proceedings Article | 18 October 2021 Paper

Paper

Measurement of thermal barrier coating thickness of turbine blade based on THz-TDS

Chunlian Li, Qiang Niu, Ji Cao, Zhenwei Zhang, Jianchao Li, Lu Wang, Qing He, Yuping Yang, Cunlin Zhang

Proceedings Volume 11906, 119061L (2021) https://doi.org/10.1117/12.2604059

KEYWORDS: Coating, Refractive index, Terahertz radiation, Reflection, Signal attenuation, Ceramics, Absorption, Nondestructive evaluation, Interfaces, Error analysis

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Sequential laser pulse thermal excitation method for the detection of defects in metallic materials

Wei Fang, Xue Yang, Xiangyu Wang, Gangbo Hu, Ning Tao, Cunling Zhang

Proceedings Volume 11906, 119061F (2021) https://doi.org/10.1117/12.2602753

KEYWORDS: Pulsed laser operation, Thermography, Defect detection, Solid state lasers, Metals, Infrared cameras

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Infrared nondestructive testing technology for multilayer metal structures

Xiang-Yu Wang, Xue Yang, Wei Fang, Gang-Bo Hu, Ning Tao, Cun-Lin Zhang

Proceedings Volume 11906, 119061A (2021) https://doi.org/10.1117/12.2602663

KEYWORDS: Signal to noise ratio, Metals, Thermography, Nondestructive evaluation, Thermal modeling, 3D modeling, Infrared radiation

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Influence of indoor object diffraction on the performance of 300 GHz communication channel

Pandeng Wang, Jiuzhou Han, Qingyuan Yao, Xiaolei Wu, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11906, 1190612 (2021) https://doi.org/10.1117/12.2602527

KEYWORDS: Diffraction, Metals, Motion models, Terahertz radiation, Signal attenuation, Wireless communications, Non-line-of-sight propagation

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Effect of ammonium salt on hydrogen bond based on terahertz microfluidic chip

Qinghao Meng, Jing Ding, Qingjun Li, Bo Su, Cunlin Zhang

Proceedings Volume 11906, 119060Y (2021) https://doi.org/10.1117/12.2602489

KEYWORDS: Terahertz radiation, Hydrogen, Molecules, Microfluidics, Ions, Polymethylmethacrylate, Liquids, Terahertz spectroscopy, Spectroscopy, Terahertz technology

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Highly sensitive detection of 4-mercaptohydrocinnamic acid proportion using terahertz metamaterial

Wanlin Liang, Mengyuan Wang, Suqi Zhang, Qingli Zhou, Jian Zuo, Cunlin Zhang

Proceedings Volume 11906, 119060V (2021) https://doi.org/10.1117/12.2602312

KEYWORDS: Terahertz radiation, Metamaterials, Resonators, Sensors, Biosensing, Terahertz metamaterials, Spectroscopy, Refractive index, Electromagnetism, Water

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Comparison of several infrared image enhancement algorithms

Li Wang, Ning Tao, Zhuoqiao Wu, Jiangang Sun, Cunlin Zhang

Proceedings Volume 11906, 119061E (2021) https://doi.org/10.1117/12.2602752

KEYWORDS: Signal to noise ratio, Thermography, Image processing, Aluminum, Infrared imaging, Infrared radiation, Image enhancement, Signal processing, Infrared cameras, Defect detection

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Emissivity measurement with the dual-temperature method

Gangbo Hu, Zhuoqiao Wu, Xue Yang, Ning Tao, Cunlin Zhang

Proceedings Volume 11906, 119061C (2021) https://doi.org/10.1117/12.2602730

KEYWORDS: Aluminum, Infrared radiation, Temperature metrology, Black bodies, Thermography, Infrared imaging, Infrared cameras

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Terahertz transmission characteristics of electric field to sodium salt

Yan Shen, Qingjun Li, Jing Ding, Bo Su, Cunlin Zhang

Proceedings Volume 11906, 1190614 (2021) https://doi.org/10.1117/12.2602537

KEYWORDS: Microfluidics, Sodium, Terahertz radiation, Terahertz spectroscopy, Molecules, Signal detection, Hydrogen, Absorption

Read Abstract +

Because the vibrational and rotational energy levels of many biomolecules are in the terahertz range, they can interact with terahertz. In addition, the photon energy of terahertz wave is very low, only meV level, which will not cause damage to the material, so terahertz technology can be used for non-destructive detection of biological molecules. As we all know, many biomolecules need to maintain their biological activity in aqueous solution, so it is of practical significance to study the biological characteristics in aqueous solution. The combination of terahertz and microfluidic technology can greatly reduce the absorption of liquid samples to terahertz, so it can detect more accurate signals. Therefore, terahertz time domain spectroscopy technology has a good application prospect in biological detection. The terahertz transmission characteristics of different sodium salts standing in electric field for different time are studied. Double layer terahertz microfluidic chips were prepared by using cycloolefin copolymer (COC) materials with high transmission rate for terahertz wave. The terahertz transmission characteristics of four kinds of sodium salts under the action of electric field were tested by using microfluidic chips with strong sealing performance. In order to avoid the influence of ionic impurities in aqueous solution, deionized water was used to prepare the solution. NaCl, CH₃COONa, NaHCO₃ and Na₂CO₃ electrolyte solutions with concentration of 0.9 mol/L are selected. The four solutions were injected into the microfluidic chip in turn, and then put into the external electric field device. The electric field treatment time is 0 min, 5 min, 10 min, 15 min and 20 min respectively. The transmission intensity is measured by terahertz time domain spectroscopy system every five minutes, and the corresponding spectrum can be obtained. The results show that with the increase of electric field time, the THz transmission intensity of the four sodium salt solutions increases.

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Simulation research on indoor terahertz communication channel characteristics of 220-330 GHz based on ray tracing

Jiuzhou Han, Pandeng Wang, Zhongxin Zhao, Xiaolei Wu, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11906, 119060X (2021) https://doi.org/10.1117/12.2602484

KEYWORDS: Terahertz radiation, 3D modeling, Signal attenuation, Non-line-of-sight propagation, Ray tracing, Reflection, Wireless communications, Electromagnetic radiation

Read Abstract +

Proceedings Article | 9 October 2021 Poster + Paper

Poster + Paper

Terahertz absorption characteristics of potassium salt solution in electric field based on microfluidic chip

Qing-jun Li, Yan Shen, Qing-hao Meng, Bo Su, Cun-lin Zhang

Proceedings Volume 11906, 1190613 (2021) https://doi.org/10.1117/12.2602529

KEYWORDS: Potassium, Microfluidics, Terahertz spectroscopy, Hydrogen, Terahertz technology, Spectroscopy, Liquids

Read Abstract +

Proceedings Article | 9 September 2021 Paper

Paper

Simulation of terahertz transmission modulation based on nested metal resonator metamaterials

Mengyuan Wang, Suqi Zhang, Qingli Zhou, Pujing Zhang, Cunlin Zhang

Proceedings Volume 11909, 119090Q (2021) https://doi.org/10.1117/12.2605533

KEYWORDS: Terahertz radiation, Resonators, Metamaterials, Metals, Modulation, Split ring resonators, Absorption, Structural design, Modulators, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 9 September 2021 Paper

Paper

Plasmon-induced transparency effect in terahertz metamaterials

Suqi Zhang, Mengyuan Wang, Pujing Zhang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 11909, 119090U (2021) https://doi.org/10.1117/12.2605588

KEYWORDS: Resonators, Refractive index, Transparency, Metamaterials, Absorption, Terahertz metamaterials, Terahertz radiation, Destructive interference, Dielectrics, Modulators

Read Abstract +

Proceedings Article | 9 September 2021 Paper

Paper

Active control properties and coupling effect in the terahertz metamaterials

Ji Qi, Zhengyan Liu, Hongru Ma, Chenxin Ding, Pujing Zhang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 11909, 119090R (2021) https://doi.org/10.1117/12.2605546

KEYWORDS: Terahertz radiation, Oscillators, Absorption, Terahertz metamaterials, Dielectrics, Metamaterials, Electromagnetism, Split ring resonators, Modulation, Control systems

Read Abstract +

Proceedings Article | 9 September 2021 Paper

Paper

Influence of dielectric environment on the resonant characteristics in anisotropic terahertz metamaterials

Hongru Ma, Chenxin Ding, Ji Qi, Zhengyan Liu, Pujing Zhang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 11909, 119090V (2021) https://doi.org/10.1117/12.2605591

KEYWORDS: Terahertz radiation, Dielectrics, Absorption, Refractive index, Dielectric polarization, Transmittance, Terahertz metamaterials, Metamaterials, Electromagnetism, Statistical analysis

Read Abstract +

SPIE Journal Paper | 3 February 2021 Open Access

Open Access

Transient evolution of quasifree electrons of plasma in liquid water revealed by optical-pump terahertz-probe spectroscopy

Yong Tan, Hang Zhao, Rui Zhang, Yuejin Zhao, Cunlin Zhang, Xi-Cheng Zhang, Liangliang Zhang

AP, Vol. 3, Issue 01, 015002, (February 2021) https://doi.org/10.1117/12.10.1117/1.AP.3.1.015002

KEYWORDS: Electrons, Terahertz radiation, Plasma, Absorption, Liquids, Nitrogen, Modulation, Water, Picosecond phenomena, Femtosecond phenomena

Read Abstract +

Proceedings Article | 5 November 2020 Paper

Paper

Characterization of the lacquerware from the Palace Museum by THz reflectometric imaging

Hongfei Zhang, Yuanmeng Zhao, Chengyu Li, Cunlin Zhang

Proceedings Volume 11562, 115620E (2020) https://doi.org/10.1117/12.2575959

KEYWORDS: Terahertz radiation, Imaging systems, Reflection, Reflectance spectroscopy, Visualization, Interfaces, X-rays, Spectroscopy, Resistance

Read Abstract +

Proceedings Article | 14 October 2020 Poster + Paper

Poster + Paper

Terahertz absorption characteristics of strong acid solution based on microfluidic chip

Si-Yu Shao, Bo Su, Hai-Yun Huang, Guo-Yang Wang, Cun-Lin Zhang

Proceedings Volume 11559, 1155913 (2020) https://doi.org/10.1117/12.2575295

KEYWORDS: Terahertz radiation, Absorption, Microfluidics, Molecules, Terahertz technology, Hydrogen, Terahertz spectroscopy, Biological detection systems, Liquids, Distance measurement

Read Abstract +

Proceedings Article | 10 October 2020 Paper

Paper

Application of terahertz technology in the identification of traditional Chinese medicine

Bao-feng Jiang, Jiayu Yan, Jian Zuo, Cun-lin Zhang

Proceedings Volume 11559, 115590C (2020) https://doi.org/10.1117/12.2573923

KEYWORDS: Medicine, Terahertz technology, Terahertz spectroscopy, Spectroscopy, Analytical research, Absorption, Principal component analysis, Data acquisition, Signal to noise ratio, Terahertz radiation

Read Abstract +

Proceedings Article | 10 October 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Simulation of THz-TDS echo filtering algorithm based on deep learning

Hongfei Zhang, Yuanmeng Zhao, Cunlin Zhang

Proceedings Volume 11559, 115590O (2020) https://doi.org/10.1117/12.2573406

KEYWORDS: Computer simulations, Spectral resolution, Absorption, Terahertz radiation, Optical filters, Terahertz spectroscopy, Statistical modeling, Spectroscopy, Signal attenuation, Deconvolution

Read Abstract +

Proceedings Article | 10 October 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Generation of polarization controllable strong THz source from air plasma excited by three-color laser field

Minghao Zhang, Danni Ma, Cunlin Zhang, Liangliang Zhang

Proceedings Volume 11559, 115591E (2020) https://doi.org/10.1117/12.2584355

KEYWORDS: Terahertz radiation, Polarization, Plasma, Pulsed laser operation, Polarization control, Optical simulations, Laser applications, Femtosecond phenomena

Read Abstract +

Proceedings Article | 10 October 2020 Presentation

Presentation

THz liquid photonics and beyond

Yiwen E., Qi Jin, Jianming Dai, Yuqi Cao, Fang Ling, Kaia Williams, Mervin Lin Pac Chong, Gregoire Leir, Kareem J. Garriga Francis, Anton Tcypkin, Liangliang Zhang, Cunlin Zhang, Xicheng Zhang

Proceedings Volume 11559, 1155902 (2020) https://doi.org/10.1117/12.2575014

KEYWORDS: Liquids, Terahertz radiation, Photonics, Pulsed laser operation, Solids, Plasma, Gases, Absorption, Molecules, Molecular lasers

Read Abstract +

Proceedings Article | 10 October 2020 Poster + Paper

Poster + Paper

Terahertz absorption characteristics of solutions at different pH values

Hai-Yun Huang, Bo Su, Si-Yu Shao, Guo-Yang Wang, Cun-Lin Zhang

Proceedings Volume 11559, 1155915 (2020) https://doi.org/10.1117/12.2575304

KEYWORDS: Absorption, Terahertz radiation, Microfluidics, Terahertz technology, Molecules, Hydrogen, Fluid dynamics, Ions, Wave propagation, Water

Read Abstract +

SPIE Journal Paper | 11 September 2020

Development and validation of a terahertz time-domain spectroscopy measurement chip

Ya-Ping Zhao, Bo Su, Rui Wu, Hai-Lin Cui, Cun-Lin Zhang

OE, Vol. 59, Issue 09, 095104, (September 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.9.095104

KEYWORDS: Terahertz radiation, Terahertz spectroscopy, Antennas, Spectroscopy, Semiconducting wafers, Waveguides, Electrodes, Dielectrics, Metals, Gallium arsenide

Read Abstract +

SPIE Journal Paper | 19 May 2020

Terahertz spectral analysis of different electrolytes

Yi-Wei Wen, Bo Su, Jiahui Wang, Guoyang Wang, Yaxiong Wu, Jingsuo He, Cunlin Zhang

OE, Vol. 59, Issue 05, 055107, (May 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.5.055107

KEYWORDS: Terahertz radiation, Hydrogen, Sodium, Ions, Molecules, Copper, Potassium, Microfluidics, Chlorine, Absorption

Read Abstract +

Proceedings Article | 12 March 2020 Paper

Paper

Terahertz wave generation from laser-induced air plasma influenced by the external electric field

Aoxue Yu, Liangliang Zhang, Shijia Feng, Tong Wu, Cunlin Zhang

Proceedings Volume 11441, 1144105 (2020) https://doi.org/10.1117/12.2541003

KEYWORDS: Terahertz radiation, Plasma, Polarization, Modulation, Applied physics

Read Abstract +

Proceedings Article | 12 March 2020 Paper

Paper

Analytical method for studying terahertz vibrations in different ginseng

An-jie Wei, Zi-han Zhou, Shang-jian Liu, Jian Zuo, Cun-lin Zhang

Proceedings Volume 11441, 1144103 (2020) https://doi.org/10.1117/12.2540275

KEYWORDS: Terahertz spectroscopy, Terahertz radiation, Blood, Safety, Medicine, Macromolecules, Spectroscopy, Absorption, Refractive index, Principal component analysis

Read Abstract +

Proceedings Article | 12 March 2020 Paper

Paper

A simple approach to generate a monochromatic plate-like THz beam

Zhenwei Zhang, Yuejin Zhao, Kejia Wang, Cunlin Zhang

Proceedings Volume 11441, 1144107 (2020) https://doi.org/10.1117/12.2541917

KEYWORDS: Terahertz radiation, Lens design, Optical components, Imaging systems, Free space, Beam propagation method, Collimation, Sensors, Optoelectronics, Diffraction

Read Abstract +

Proceedings Article | 12 March 2020 Paper

Paper

Qualitative detection of mycelium in cordyceps powder using terahertz time-domain spectroscopy

Mengying Wang, Haishun Liu, Jian Zuo, Cunlin Zhang

Proceedings Volume 11441, 114410F (2020) https://doi.org/10.1117/12.2549239

KEYWORDS: Principal component analysis, Terahertz spectroscopy, Spectroscopy, Terahertz radiation, Absorption, Statistical analysis, Medicine, Data modeling, Refractive index, Complex systems

Read Abstract +

Proceedings Article | 12 March 2020 Paper

Paper

Temperature dependent terahertz spectroscopy of azithromycin dihydrate

Meijiao Huang, Jian Zuo, Cunlin Zhang

Proceedings Volume 11441, 1144108 (2020) https://doi.org/10.1117/12.2542283

KEYWORDS: Absorption, Terahertz radiation, Terahertz spectroscopy, Temperature metrology, Spectroscopy, Crystals, Molecules, Solids, Nitrogen, Fourier transforms

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Electrode of photoconductive antenna in terahertz on chip system

Rui Wu, Bo Su, Yaping Zhao, Jingsuo He, Cunlin Zhang

Proceedings Volume 11196, 111961M (2019) https://doi.org/10.1117/12.2537829

KEYWORDS: Antennas, Electrodes, Terahertz radiation, Structural design, Device simulation, Reflectivity, Chemical elements, Millimeter wave sensors, Imaging systems, System integration

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Study on light field imaging technology and its prospects in terahertz field

Zhichen Bai, Bo Su, Lihua Geng, Jiaqi Zhang, Jingsuo He, Cunlin Zhang

Proceedings Volume 11196, 111961K (2019) https://doi.org/10.1117/12.2537793

KEYWORDS: Cameras, Microlens array, Imaging technologies, Optical imaging, Sensors, Microscopes, Spatial resolution, 3D image reconstruction, Visible radiation, Imaging systems

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Molecular detection of sodium nitrate and sodium nitrite based on THz-TDS system

Jiahui Wang, Bo Su, Yiwei Wen, Yaxiong Wu, Jingsuo He, Cunlin Zhang

Proceedings Volume 11196, 111961J (2019) https://doi.org/10.1117/12.2537783

KEYWORDS: Sodium, Terahertz radiation, Absorption, Terahertz spectroscopy, Molecules, Antennas, Spectroscopy, Millimeter wave sensors, Femtosecond phenomena, Ions

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

310 GHz communication system based on direct spreading sequence

Xiaolei Wu, Zikang Xiong, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11196, 111961H (2019) https://doi.org/10.1117/12.2537718

KEYWORDS: Signal to noise ratio, Telecommunications, Wireless communications, Information and communication technologies, Modulation, Interference (communication), Terahertz technology, Demodulation

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Characterization of the electromagnetic property of porous ceramic using THz-TDS

Wenzhen Luo, Zhenwei Zhang, Haishun Liu, Cunlin Zhang

Proceedings Volume 11196, 111961F (2019) https://doi.org/10.1117/12.2537707

KEYWORDS: Ceramics, Refractive index, Signal detection, Terahertz radiation, Electromagnetism, Missiles, Nondestructive evaluation, Dielectrics, Terahertz spectroscopy, Free space

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Metamaterial and its sensing application in terahertz region

Jing Liu, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 11196, 1119615 (2019) https://doi.org/10.1117/12.2537190

KEYWORDS: Sensors, Biosensing, Metamaterials, Quantitative analysis, Liquids, Biological research, Biological and chemical sensing

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Harmonic method for noise reduction in subharmonic mixing terahertz communication system

Zikang Xiong, Dalu Guo, Xiaolei Wu, Jingsuo He, Bo Su, Min Zhang, Cunlin Zhang

Proceedings Volume 11196, 111961I (2019) https://doi.org/10.1117/12.2537721

KEYWORDS: Telecommunications, Denoising, Oscillators, Signal to noise ratio, Interference (communication), Information and communication technologies, Terahertz radiation, Signal generators, Transmitters, Antennas

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Comparison for two deconvolution techniques of terahertz signal

Haishun Liu, Zhenwei Zhang, Cunlin Zhang, Donghai Han

Proceedings Volume 11196, 111960T (2019) https://doi.org/10.1117/12.2537644

KEYWORDS: Deconvolution, Terahertz radiation, Filtering (signal processing)

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Reversible composite terahertz modulator based on VO2 phase transition

Ge Li, Qingli Zhou, Wanlin Liang, Cunlin Zhang

Proceedings Volume 11196, 1119616 (2019) https://doi.org/10.1117/12.2537533

KEYWORDS: Composites, Modulators, Phase shift keying, Terahertz radiation, Metamaterials, Optical filters, Optical components, Vanadium, Modulation, Dielectrics

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Study on the spectral and polarization properties of split circular terahertz resonators

Nan Jiang, Qingli Zhou, Yuwang Deng, Wanlin Liang, Cunlin Zhang

Proceedings Volume 11196, 1119619 (2019) https://doi.org/10.1117/12.2537537

KEYWORDS: Polarization, Resonators, Terahertz metamaterials, Electromagnetic radiation, Biosensing, Biosensors

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Study on transmission enhancement of air-adsorbed graphene by terahertz spectroscopy

Yuwang Deng, Qingli Zhou, Nan Jiang, Wanlin Liang, Cunlin Zhang

Proceedings Volume 11196, 111961B (2019) https://doi.org/10.1117/12.2537566

KEYWORDS: Graphene, Spectroscopy, Optical spectroscopy, Time resolved spectroscopy, Terahertz radiation, Carbon, Chemical species, Fermions, Transistors, Integrated circuits

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Highly sensitive detection of glycerol proportion using asymmetric terahertz metamaterial

Wanlin Liang, Qingli Zhou, Jian Zuo, Ge Li, Zihan Zhou, Cunlin Zhang

Proceedings Volume 11196, 1119617 (2019) https://doi.org/10.1117/12.2537535

KEYWORDS: Terahertz metamaterials, Metamaterials, Electromagnetism, Terahertz spectroscopy, Transmittance, Resonance enhancement, Silicon, Metals, Split ring resonators, Spectroscopy

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Simulation of terahertz light field imaging based on single camera

Lihua Geng, Jingsuo He, Zhichen Bai, Jiaqi Zhang, Bo Su, Cunlin Zhang

Proceedings Volume 11196, 111961E (2019) https://doi.org/10.1117/12.2537700

KEYWORDS: Terahertz radiation, Microlens array, Imaging systems, Cameras, Computer simulations, Device simulation, Computational imaging, MATLAB, Biometrics, Information security

Read Abstract +

Proceedings Article | 18 November 2019 Paper

Paper

Research on depth-of-field depth-of-light field microscopy in the terahertz band

Jiaqi Zhang, Lihua Geng, Zhichen Bai, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11196, 111961G (2019) https://doi.org/10.1117/12.2537710

KEYWORDS: Microscopy, Imaging technologies, Terahertz radiation, Microlens array, Relays, Geometrical optics, Coherence (optics), Image resolution, Light, Terahertz technology

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

The study of terahertz wave generation via pre-ionized air plasma

Kai Kang, Liangliang Zhang, Tong Wu, Kai Li, Bo Peng, Cunlin Zhang

Proceedings Volume 10826, 108261F (2018) https://doi.org/10.1117/12.2501389

KEYWORDS: Terahertz radiation, Modulation, Plasma, Electrons, Ions, Particles, Polarization, Optoelectronics, Plasma generation, Signal detection

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

Wavelength dependent terahertz wave modulation based on preformed air plasma

Liangliang Zhang, Tong Wu, Cunlin Zhang

Proceedings Volume 10826, 108260B (2018) https://doi.org/10.1117/12.2505159

KEYWORDS: Terahertz radiation, Polarization, Pulsed laser operation, Crystals, Polarizers, Plasma, Ionization, Laser crystals, Polarization control, Nonlinear optics

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

THz wave generation from air plasma induced by vortex beam

Guangtong Jiang, Liangliang Zhang, Shijing Zhang, Cunlin Zhang

Proceedings Volume 10826, 108261G (2018) https://doi.org/10.1117/12.2501445

KEYWORDS: Terahertz radiation, Plasma, Gaussian beams, Spiral phase plates, Pulsed laser operation, Plasma generation, Laser energy, Spatial light modulators, Terahertz technology, Crystals

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

Study on asymmetric terahertz metamaterials for biosensing

Wanlin Liang, Qingli Zhou, Ge Li, Cunlin Zhang

Proceedings Volume 10826, 108261Q (2018) https://doi.org/10.1117/12.2502511

KEYWORDS: Terahertz radiation, Metamaterials, Polarization, Biosensing, Absorption, Terahertz metamaterials, Electromagnetism, Transparency, Finite-difference time-domain method

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

Enhance the contrast for the terahertz pulse parametric imaging

Haishun Liu, Zhenwei Zhang, Cunlin Zhang

Proceedings Volume 10826, 1082614 (2018) https://doi.org/10.1117/12.2500946

KEYWORDS: Image segmentation, Terahertz radiation, Imaging spectroscopy

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

Terahertz reflection time-domain spectroscopy for measuring alcohol concentration

Wenzhen Luo, Zhenwei Zhang, Haishun Liu, Cunlin Zhang

Proceedings Volume 10826, 1082615 (2018) https://doi.org/10.1117/12.2500966

KEYWORDS: Terahertz radiation, Reflectivity, Terahertz spectroscopy, Reflectance spectroscopy, Liquids, Reflection

Read Abstract +

Proceedings Article | 9 November 2018 Paper

Paper

Resonance coupling and optical modulation properties in terahertz asymmetric double-wire structures

Ge Li, Qingli Zhou, Wanlin Liang, Cunlin Zhang

Proceedings Volume 10826, 108261P (2018) https://doi.org/10.1117/12.2502510

KEYWORDS: Terahertz radiation, Modulation, Metals, Gallium arsenide, Transmittance, Electromagnetism, Semiconductors, Germanium, Spectroscopy, Metamaterials

Read Abstract +

Proceedings Article | 14 September 2018 Presentation + Paper

Presentation + Paper

Wavelength dependent terahertz wave modulation based on preformed air plasma

Tong Wu, Liangliang Zhang, Shijing Zhang, Hang Zhao, Liquan Dong, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 10756, 107560Q (2018) https://doi.org/10.1117/12.2319819

KEYWORDS: Terahertz radiation, Plasma, Polarization, Modulation, Pulsed laser operation, Imaging spectroscopy, Crystals, Phase shift keying, Laser crystals, Optoelectronics

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

A simple system for 160GHz optical terahertz wave generation and data modulation

Yihan Li, Jingsuo He, Xueming Sun, Zexia Shi, Ruike Wang, Hailin Cui, Bo Su, Cunlin Zhang

Proceedings Volume 10623, 106230F (2018) https://doi.org/10.1117/12.2295076

KEYWORDS: Terahertz radiation, Optical filters, Modulators, Modulation, Telecommunications, Microwave radiation, Terahertz technology, Signal attenuation, Radio optics, Wireless communications

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Detection of Ionic liquid using terahertz time-domain spectroscopy

Cuicui Wang, Xiaojing Zhao, Shangjian Liu, Jian Zuo, Cunlin Zhang

Proceedings Volume 10623, 106230J (2018) https://doi.org/10.1117/12.2295204

KEYWORDS: Liquids, Terahertz spectroscopy, Dielectrics, Spectroscopy, Terahertz radiation, Refractive index, Water, Hydrogen, Dielectric relaxation, Ions

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

The preparation method of terahertz monolithic integrated device

Cong Zhang, Bo Su, Jingsuo He, Hongfei Zhang, Yaxiong Wu, Shengbo Zhang, Cunlin Zhang

Proceedings Volume 10623, 106230G (2018) https://doi.org/10.1117/12.2295156

KEYWORDS: Antennas, Semiconducting wafers, Terahertz radiation, Metals, Semiconductors, Gallium arsenide, Electrodes, Millimeter wave sensors, Waveguides, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Hydrothermal preparation of vanadium dioxide thin films and research progress of terahertz modulation

Zexia Shi, Ruike Wang, Xipeng Jin, Jingsuo He, Xueming Sun, Cunlin Zhang, Bo Su, Shengbo Zhang

Proceedings Volume 10623, 106230H (2018) https://doi.org/10.1117/12.2295194

KEYWORDS: Vanadium, Thin films, Terahertz radiation, Modulation, Transition metals, Metals, Phase shift keying, Crystals, Resistance, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Study on THz wave generation from air plasma induced by quasi-square Airy beam

Shijing Zhang, Liangliang Zhang, Guangtong Jiang, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 10623, 106230R (2018) https://doi.org/10.1117/12.2300546

KEYWORDS: Terahertz radiation, Modulation, Plasma, Crystals, Laser crystals, Spatial light modulators, Gaussian beams, Plasma generation, Phase shift keying, Mirrors

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Studies on the resonant properties in the asymmetric dipole-array terahertz metamaterials

Wei Chen, Qingli Zhou, Chenyu Li, Lan Shi, Changxiang Liu, Cunlin Zhang

Proceedings Volume 10623, 106230P (2018) https://doi.org/10.1117/12.2295599

KEYWORDS: Metamaterials, Terahertz metamaterials, Resonators, Optoelectronics

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Removing the echoes from terahertz pulse reflection system and sample

Haishun Liu, Zhenwei Zhang, Cunlin Zhang

Proceedings Volume 10623, 106230L (2018) https://doi.org/10.1117/12.2295235

KEYWORDS: Deconvolution, Gaussian filters, Terahertz radiation, Pulsed laser operation, Sensors, Silicon, Semiconducting wafers

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Manipulating the strength and broadband of the resonators in the terahertz metamaterials

Changxiang Liu, Qingli Zhou, Chenyu Li, Cunlin Zhang

Proceedings Volume 10623, 1062304 (2018) https://doi.org/10.1117/12.2295291

KEYWORDS: Terahertz radiation, Resonators, Terahertz metamaterials, Electromagnetism, Polarization, Metamaterials, Finite-difference time-domain method, Modulation, Modulators, Sensors

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Quantitative detection of melamine based on terahertz time-domain spectroscopy

Xiaojing Zhao, Cuicui Wang, Shangjian Liu, Jian Zuo, Zihan Zhou, Cunlin Zhang

Proceedings Volume 10623, 106230I (2018) https://doi.org/10.1117/12.2295203

KEYWORDS: Terahertz spectroscopy, Spectroscopy, Absorption, Refractive index, Nondestructive evaluation, Terahertz technology

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Light field imaging and application analysis in THz

Hongfei Zhang, Bo Su, Jingsuo He, Cong Zhang, Yaxiong Wu, Shengbo Zhang, Cunlin Zhang

Proceedings Volume 10623, 106230O (2018) https://doi.org/10.1117/12.2295540

KEYWORDS: Microlens array, Imaging systems, Terahertz radiation, Imaging arrays, Fourier transforms, Sensors

Read Abstract +

Proceedings Article | 12 January 2018 Paper

Paper

Studies on electromagnetic response in arc-shaped structures in terahertz region

Lan Shi, Qingli Zhou, Huijuan Sun, Chenyu Li, Changxiang Liu, Cunlin Zhang

Proceedings Volume 10623, 106230M (2018) https://doi.org/10.1117/12.2295336

KEYWORDS: Resonators, Electromagnetism, Finite-difference time-domain method, Metamaterials, Terahertz radiation, Superposition, Imaging spectroscopy, Optoelectronics, Modulation, Terahertz metamaterials

Read Abstract +

Proceedings Article | 10 January 2018 Paper

Paper

An effective way to reduce water absorption to terahertz

Yaxiong Wu, Bo Su, Jingsuo He, Cong Zhang, Hongfei Zhang, Shengbo Zhang, Cunlin Zhang

Proceedings Volume 10616, 1061615 (2018) https://doi.org/10.1117/12.2294970

KEYWORDS: Absorption, Microfluidics, Transmittance, Terahertz radiation, Hydrogen, Liquids, Molecules, Potassium, Sodium, Imaging spectroscopy

Read Abstract +

Proceedings Article | 24 October 2017 Paper

Paper

Study of the traditional Chinese pigments by terahertz time-domain and Fourier-transform infrared spectroscopy

C. Y. Li, N. C. Shi, G. H. Li, Z. W. Zhang, A. Gu, Y. Lei, C. L. Zhang

Proceedings Volume 10459, 1045902 (2017) https://doi.org/10.1117/12.2281602

KEYWORDS: Infrared spectroscopy, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 24 October 2017 Paper

Paper

Studies on the trapped-mode resonant properties in asymmetric terahertz metamaterial

Wei Chen, Qingli Zhou, Chenyu Li, Lan Shi, Changxiang Liu, Cunlin Zhang

Proceedings Volume 10459, 104590D (2017) https://doi.org/10.1117/12.2284323

KEYWORDS: Terahertz metamaterials, Metamaterials, Electromagnetism

Read Abstract +

Proceedings Article | 24 October 2017 Paper

Paper

Influence of asymmetric structures on electromagnetic response characteristics of terahertz metamaterials

Lan Shi, Qingli Zhou, Changxiang Liu, Huijuan Sun, Chenyu Li, Cunlin Zhang

Proceedings Volume 10459, 104590H (2017) https://doi.org/10.1117/12.2284372

KEYWORDS: Electromagnetism, Terahertz metamaterials, Metamaterials

Read Abstract +

Proceedings Article | 23 August 2017 Paper

Paper

Characterization of THz wave generated from air plasma induced by two-color laser with long wavelength

Shijing Zhang, LiangLiang Zhang, Tong Wu, Hang Zhao, Xiaomei Yu, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 10383, 103830E (2017) https://doi.org/10.1117/12.2272647

KEYWORDS: Terahertz radiation, Crystals, Polarization, Plasma, Laser crystals, Nonlinear crystals, Pulsed laser operation, Plasma generation, Harmonic generation, Tunable lasers

Read Abstract +

Proceedings Article | 8 December 2016 Paper

Paper

The birefringence of two liquid crystals in terahertz band

Huijuan Sun, Qingli Zhou, Chenyu Li, Lingqin Kong, Yuejin Zhao, Cunlin Zhang

Proceedings Volume 10030, 100302D (2016) https://doi.org/10.1117/12.2246343

KEYWORDS: Liquid crystals, Terahertz radiation, Spectroscopy, Electro optics, Birefringence, Terahertz spectroscopy, Refraction, Refractive index, Silica, Anisotropy

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Terahertz characteristics of graphene deposited on different substrates

Chen Gong, Kaijun Mu, Jian Zuo, Cunlin Zhang

Proceedings Volume 10030, 1003022 (2016) https://doi.org/10.1117/12.2246029

KEYWORDS: Graphene, Terahertz radiation, Polymethylmethacrylate, Terahertz spectroscopy, Sapphire, Transmittance, Chemical vapor deposition, Picosecond phenomena, Silicon, Signal attenuation

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Design and research for biosensing THz microfluidic chips

Ning Fan, Bo Su, Cong Zhang, Cunlin Zhang

Proceedings Volume 10030, 100302F (2016) https://doi.org/10.1117/12.2246354

KEYWORDS: Terahertz radiation, Microfluidics, Absorption, Biosensing, Terahertz technology, Molecules, Molecular biology, Liquids, Signal to noise ratio, Transmittance

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Terahertz spectroscopy of different types of water

Jing Liu, Jian Zuo, Cunlin Zhang

Proceedings Volume 10030, 100301N (2016) https://doi.org/10.1117/12.2245552

KEYWORDS: Liquids, Terahertz radiation, Water, Refractive index, Absorption, Terahertz spectroscopy, Minerals, Spectroscopy, Correlation function, Dielectric polarization

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Research of biological liquid albumin based on terahertz time domain spectroscopy

Shuai Yang, Shang-jian Liu, Jian Zuo, Cun-lin Zhang

Proceedings Volume 10030, 100302O (2016) https://doi.org/10.1117/12.2247660

KEYWORDS: Terahertz spectroscopy, Liquids, Spectroscopy, Biological research, Proteins, Terahertz radiation, Absorption, Principal component analysis, Refractive index, Water

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

The design of circuit for THz time domain spectroscopy system based on asynchronous optical sampling

Ruike Wang, Mile Zhang, Yihan Li, Jingsuo He, Cunlin Zhang, Hailin Cui

Proceedings Volume 10030, 1003027 (2016) https://doi.org/10.1117/12.2246191

KEYWORDS: Spectroscopy, Terahertz spectroscopy, Terahertz radiation, Fiber lasers, Femtosecond phenomena, Signal detection, Sensors, Pulsed laser operation, Control systems, Optical amplifiers

Read Abstract +

Terahertz time domain spectroscopy system (THz-TDS) is the most commonly means of measuring terahertz time-domain spectroscopy. The time delay between the pump and probe laser is an important technology to realize THz time domain spectrum measurement. The translation platform with two mirrors and the mechanical structure is the popular means to adjust the optical path difference between the pump and probe laser to get the time delay of femtosecond pulse. Because of the limit of the mechanical structure and the phase-locked amplifier, this technique can’t scan spectrum fast. In order to obtain high quality signal, a long time will be taken to scan spectrum. So a more rapid and convenient time delay technology is required to Instead of the machine translation platform and accomplish the Rapid spectral measurement. Asynchronous optical sampling technique is a way to get the time delay by producing a very small frequency difference between the repetition frequency of two femtosecond lasers. The scanner time will be reduced, because of there is no waste of time, due to mechanical inertia, not only by using the asynchronous optical sampling method to replace the mechanical structure without the influence of vibration. It will greatly increase the degree of integration by using the fiber femtosecond laser and highly integrated circuit to realize optical asynchronous sampling.

To solve the problem above, a terahertz time-domain spectroscopy system based on asynchronous sampling is designed in this thesis. The system is based of two femtosecond laser whose repetition frequency is 100MHz.In order to realize asynchronous sampling, the control circuit of the two lasers is the most important. This thesis focuses on the researching, designing and experiment of this circuit. Firstly, the circuit is designed overall. Then the selection of the key device and the designing of the circuit principle is done by myself. Secondly, the test of the circuit to phase locked the master and slave fiber femtosecond lasers has been done. As a result, the two lasers can phase locked on two repetition frequencies with a small frequency difference calculated by the circuit.

Proceedings Article | 3 November 2016 Paper

Paper

The properties of electromagnetic responses and optical modulation in terahertz metamaterials

Wei Chen, Yulei Shi, Wei Wang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 10030, 100301R (2016) https://doi.org/10.1117/12.2245829

KEYWORDS: Modulation, Terahertz radiation, Electromagnetism, Terahertz metamaterials, Metamaterials, Split ring resonators, Finite-difference time-domain method, Absorption, Refractive index, Gallium arsenide

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Wavelength scaling of terahertz generation via two color photoionization in pre-formed plasma

Suxia Huang, Hang Zhao, Cunlin Zhang, Liangliang Zhang

Proceedings Volume 10030, 100301T (2016) https://doi.org/10.1117/12.2245846

KEYWORDS: Terahertz radiation, Plasma, Pulsed laser operation, Modulation, Ionization, Plasma generation, Imaging spectroscopy, Laser applications, Electrons, Optical amplifiers

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Terahertz microfluidic chips for detection of amino acids in aqueous solutions

Bo Su, Cong Zhang, Ning Fan, Cunlin Zhang

Proceedings Volume 10030, 100302B (2016) https://doi.org/10.1117/12.2246308

KEYWORDS: Microfluidics, Terahertz radiation, Biochemistry, Terahertz spectroscopy, Molecules, Molecular biology, Transmittance, Spectroscopy, Absorption, Liquids

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Simulation study of microstrip line in on-chip THz system

Cong Zhang, Bo Su, Ning Fan, Cunlin Zhang

Proceedings Volume 10030, 100302C (2016) https://doi.org/10.1117/12.2246326

KEYWORDS: Terahertz radiation, Waveguides, Dielectrics, Gold, Silicon, Quartz, Signal attenuation, Metals, Skin, Free space

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Nitrocellulose membrane sample holder using for terahertz time domain spectroscopy

Xiaojing Zhao, Shangjian Liu, Cuicui Wang, Jian Zuo, Cunlin Zhang

Proceedings Volume 10030, 100302E (2016) https://doi.org/10.1117/12.2246348

KEYWORDS: Terahertz spectroscopy, Spectroscopy, Imaging spectroscopy, Terahertz technology, Terahertz radiation, Absorption, Liquids, Molecules, Magnesium, Medicine

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Detection of NaCl solutions using terahertz time domain spectroscopy

Cuicui Wang, Shangjian Liu, Xiaojing Zhao, Jian Zuo, Cunlin Zhang

Proceedings Volume 10030, 100302I (2016) https://doi.org/10.1117/12.2246398

KEYWORDS: Terahertz spectroscopy, Spectroscopy, Liquids, Dielectrics, Terahertz technology, Terahertz radiation, Dielectric relaxation, Refractive index, Absorption, Water

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Wavelength scaling of terahertz radiation in plasma gas targets

Hang Zhao, Suxia Huang, Cunlin Zhang, Liangliang Zhang

Proceedings Volume 10030, 100301S (2016) https://doi.org/10.1117/12.2245845

KEYWORDS: Terahertz radiation, Plasma, Nitrogen, Helium, Neon, Argon, Gases, Xenon, Ionization, Krypton

Read Abstract +

Proceedings Article | 3 November 2016 Paper

Paper

Research on THz stepped-frequency ISAR imaging

Meiyan Liang, Zhiheng Zhang, Cunlin Zhang

Proceedings Volume 10030, 100302T (2016) https://doi.org/10.1117/12.2247867

KEYWORDS: Terahertz radiation, Radar, Radar imaging, Image resolution, Synthetic aperture radar, Image processing, Scattering, Imaging systems, Signal processing, Computing systems

Read Abstract +

SPIE Journal Paper | 12 July 2016 Open Access

Open Access

Continuous-terahertz-wave molecular imaging system for biomedical applications

Rui Zhang, Liangliang Zhang, Tong Wu, Ruixue Wang, Shasha Zuo, Dong Wu, Cunlin Zhang, Jue Zhang, Jing Fang

JBO, Vol. 21, Issue 07, 076006, (July 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.7.076006

KEYWORDS: Imaging systems, Terahertz radiation, Infrared lasers, Nanoparticles, Molecular imaging, Reflection, Biomedical optics, Water, Infrared imaging, Tissues

Read Abstract +

Proceedings Article | 31 August 2015 Paper

Paper

The study of gas species on THz generation from laser-induced air plasma

Ji Zhao, LiangLiang Zhang, YiJian Wu, Tong Wu, Hui Yuan, CunLin Zhang, YueJin Zhao

Proceedings Volume 9585, 958509 (2015) https://doi.org/10.1117/12.2186920

KEYWORDS: Terahertz radiation, Argon, Plasma, Helium, Gases, Nitrogen, Pollution control, Electrons, Chemical species, Femtosecond phenomena

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Terahertz wave generation from preformed air plasma

Tong Wu, Liangliang Zhang, Ji Zhao, Xiaoyan Xu, Cunlin Zhang

Proceedings Volume 9625, 962503 (2015) https://doi.org/10.1117/12.2193115

KEYWORDS: Terahertz radiation, Plasma, Beam controllers, Plasma generation, Ionization, Pulsed laser operation, Electrons, Terahertz technology, Optical amplifiers, Beam splitters

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Strong THz to IR thermal radiation from random metallic nanostructures by femtosecond laser excitation

Liangliang Zhang, Kaijun Mu, Ji Zhao, Tong Wu, Hai Wang, Cunlin Zhang

Proceedings Volume 9625, 962509 (2015) https://doi.org/10.1117/12.2192952

KEYWORDS: Metals, Terahertz radiation, Femtosecond phenomena, Nanostructures, Absorption, Nanostructuring, Surface finishing, Thermography, Ruthenium, Sensors

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Systematic study of terahertz wave generation in laser-included plasma

Ji Zhao, LiangLiang Zhang, YiMan Luo, Tong Wu, CunLin Zhang, YueJin Zhao

Proceedings Volume 9625, 962508 (2015) https://doi.org/10.1117/12.2192938

KEYWORDS: Terahertz radiation, Plasma, Plasma generation, Ions, Laser applications, Electrons, Laser beam diagnostics, Modulation, Pulsed laser operation, Particles

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Ultra-broadband terahertz spectroscopy of InP wafer using coherent heterodyne time domain spectrometer

Xiaoyan Xu, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 9625, 96250B (2015) https://doi.org/10.1117/12.2193388

KEYWORDS: Terahertz radiation, Absorption, Semiconducting wafers, Refractive index, Spectroscopy, Terahertz spectroscopy, Wafer-level optics, Optical properties, Heterodyning, Indium

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Phase detection for continuous terahertz wave

Tielin Lu, Hui Yuan, Jingshui Zhang, Liangliang Zhang, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 9625, 962506 (2015) https://doi.org/10.1117/12.2193280

KEYWORDS: Terahertz radiation, Signal detection, Electro optics, Electronic filtering, Signal processing, Imaging systems, Optical filters, Millimeter wave sensors, Imaging spectroscopy, Detection theory

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

An antenna can be used for terahertz scanning imaging instrument

Hanqi Wang, Xin Liu, Lantao Guo, Chao Deng, Cunlin Zhang

Proceedings Volume 9625, 96250C (2015) https://doi.org/10.1117/12.2193433

KEYWORDS: Antennas, Terahertz radiation, Electromagnetic radiation, 3D modeling, Imaging spectroscopy, Optical simulations, Terahertz technology, Optoelectronics, Microwave radiation, Spectroscopes

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

Influence of substrate refractive index and metallic structure size on resonant properties in terahertz split ring resonators

Zhou Yang, Yulei Shi, Wei Wang, Qingli Zhou, Chenyu Li, Ani Wu, Jianfeng Liu, Cunlin Zhang

Proceedings Volume 9625, 96250A (2015) https://doi.org/10.1117/12.2193106

KEYWORDS: Terahertz radiation, Refractive index, Split ring resonators, Metamaterials, Metals, Electromagnetism, Finite-difference time-domain method, Modulation, Modulators, Terahertz metamaterials

Read Abstract +

Proceedings Article | 12 August 2015 Paper

Paper

The effect of different particle sizes of polyethylene on the absorption of myrrh in mixtures

Lei Xu, Bin Li, Jian Zuo, Cunlin Zhang

Proceedings Volume 9625, 96250D (2015) https://doi.org/10.1117/12.2193549

KEYWORDS: Absorption, Particles, Mie scattering, Terahertz radiation, Scattering, Spectroscopy, FT-IR spectroscopy, Medicine, Infrared spectroscopy, Solids

Read Abstract +

SPIE Journal Paper | 9 April 2015

Terahertz wave absorption via femtosecond laser-filament concatenation

Ji Zhao, LiangLiang Zhang, Tong Wu, XiaoYan Xu, CunLin Zhang, YueJin Zhao

OE, Vol. 54, Issue 04, 046104, (April 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.4.046104

KEYWORDS: Terahertz radiation, Plasma, Absorption, Femtosecond phenomena, Beam controllers, Electrons, Refractive index, Gases, Argon, Imaging spectroscopy

Read Abstract +

SPIE Journal Paper | 10 March 2015 Open Access

Open Access

Label-free detection and characterization of the binding of hemagglutinin protein and broadly neutralizing monoclonal antibodies using terahertz spectroscopy

Yiwen Sun, Junlan Zhong, Cunlin Zhang, Jian Zuo, Emma Pickwell-MacPherson

JBO, Vol. 20, Issue 03, 037006, (March 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.3.037006

KEYWORDS: Proteins, Absorption, Terahertz radiation, Dielectrics, Monoclonal antibodies, Terahertz spectroscopy, Molecules, Spectroscopy, Water, Sun

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Studies on spectroscopy of glycerol in THz range using microfluidic chip-integrated micropump

Bo Su, Xue Han, Ying Wu, Cunlin Zhang

Proceedings Volume 9275, 92751J (2014) https://doi.org/10.1117/12.2073950

KEYWORDS: Microfluidics, Terahertz radiation, Glasses, Terahertz spectroscopy, Spectroscopy, Absorption, Quartz, Liquids, Molecules, Diffusers

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Target recognition in passive terahertz image of human body

Ran Zhao, Yuan-meng Zhao, Chao Deng, Cun-lin Zhang, Yue Li

Proceedings Volume 9275, 92751K (2014) https://doi.org/10.1117/12.2073957

KEYWORDS: Terahertz radiation, Image segmentation, Image processing, Image enhancement, Image processing algorithms and systems, Detection and tracking algorithms, Target recognition, Imaging systems, Millimeter wave imaging, Target detection

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Terahertz spectra of glycerol, water, and their mixture in a microfluidic chip

Xue Han, Bo Su, Ying Wu, Cunlin Zhang

Proceedings Volume 9275, 92751L (2014) https://doi.org/10.1117/12.2073962

KEYWORDS: Microfluidics, Terahertz radiation, Absorption, Quartz, Transmittance, Liquids, Water, Terahertz spectroscopy, Spectroscopy, Molecules

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

A single-frame terahertz image super-resolution reconstruction method based on sparse representation theory

Yue Li, Yuan-meng Zhao, Chao Deng, Cunlin Zhang

Proceedings Volume 9275, 92751N (2014) https://doi.org/10.1117/12.2073964

KEYWORDS: Associative arrays, Terahertz radiation, Lawrencium, Chemical species, Super resolution, Image resolution, Image processing, Image compression, Reconstruction algorithms, Safety

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

A polarization-independent terahertz modulator based on metamaterials with symmetric structure

Jingsuo He, Lei Jiao, Hailin Cui, Cunlin Zhang

Proceedings Volume 9275, 92751O (2014) https://doi.org/10.1117/12.2074349

KEYWORDS: Terahertz radiation, Modulators, Metamaterials, Absorption, Modulation, Polarization, Liquid crystals, Transmittance, Semiconductors, Gold

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Personnel screening with terahertz opto-mechanical scanning imaging

Lan-tao Guo, Xin Liu, Chao Deng, Yuan-meng Zhao, Cun-lin Zhang

Proceedings Volume 9275, 927517 (2014) https://doi.org/10.1117/12.2071775

KEYWORDS: Mirrors, Terahertz radiation, Sensors, Imaging systems, Antennas, Scanners, Image resolution, Ceramics, Metals, Information security

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Effect on influenza hemagglutinin protein binding with neutralizing antibody using terahertz spectroscopy technology

Yiwen Sun, Junlan Zhong, Jian Zuo, Cunlin Zhang

Proceedings Volume 9275, 927505 (2014) https://doi.org/10.1117/12.2071098

KEYWORDS: Proteins, Terahertz radiation, Dielectrics, Absorption, Terahertz spectroscopy, Monoclonal antibodies, Terahertz technology, Spectroscopy, Molecular interactions, Viruses

Read Abstract +

Proceedings Article | 11 November 2014 Paper

Paper

Applications of Bruggeman effective medium theory in mixture using terahertz spectrum

Leiwei Zhang, Jian Zuo, Cunlin Zhang

Proceedings Volume 9275, 92751B (2014) https://doi.org/10.1117/12.2071925

KEYWORDS: Terahertz radiation, Absorption, Particles, Terahertz spectroscopy, Spectroscopy, Molecular spectroscopy, Molecules, Dielectrics, Refractive index, Tablets

Read Abstract +

Proceedings Article | 31 December 2013 Paper

Paper

Terahertz frequency spectrum characterization of coherent heterodyne time-domain spectrometer

Ji Zhao, Liang-liang Zhang, Yi-man Luo, Tong Wu, Cunlin Zhang, Yue-jin Zhao

Proceedings Volume 9042, 904210 (2013) https://doi.org/10.1117/12.2036332

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Plasma, Laser beam diagnostics, Spectroscopy, Pulsed laser operation, Heterodyning, Optoelectronics, Crystals, Nonlinear optics

Read Abstract +

Proceedings Article | 31 December 2013 Paper

Paper

Transmitted spectral modulation of double-ring resonator using liquid crystals in terahertz range

Huijuan Sun, Qingli Zhou, Xiumin Wang, Chenyu Li, Ani Wu, Cunlin Zhang

Proceedings Volume 9042, 90421E (2013) https://doi.org/10.1117/12.2038128

KEYWORDS: Liquid crystals, Terahertz radiation, Modulation, Resonators, Spectroscopy, Quartz, Metamaterials, Electromagnetism, Optical components, Refractive index

Read Abstract +

Proceedings Article | 23 August 2013 Paper

Paper

Research of room-temperature continuous-wave terahertz imaging array based on microbolometer

Bo Su, Guoteng Duan, Hai-lin Cui, Cun-lin Zhang

Proceedings Volume 8909, 89091D (2013) https://doi.org/10.1117/12.2034979

KEYWORDS: Terahertz radiation, Microbolometers, Metals, Bolometers, Absorption, Vanadium, Resistance, Silicon, Oxides, Imaging arrays

Read Abstract +

Proceedings Article | 23 August 2013 Paper

Paper

Passive terahertz imaging for security application

Lan-tao Guo, Chao Deng, Yuan-meng Zhao, Cun-lin Zhang

Proceedings Volume 8909, 89090S (2013) https://doi.org/10.1117/12.2034156

KEYWORDS: Terahertz radiation, Mirrors, Imaging systems, Scanners, Image resolution, Sensors, Image quality, Cell phones, Millimeter wave imaging, Defense and security

Read Abstract +

Proceedings Article | 23 August 2013 Paper

Paper

The application of reduced absorption cross section on the identification of the compounds with similar function-groups

Fei Yu, Jian Zuo, Kai-jun Mu, Zhen-wei Zhang, Liang-liang Zhang, Lei-wei Zhang, Cun-lin Zhang

Proceedings Volume 8909, 89090X (2013) https://doi.org/10.1117/12.2034343

KEYWORDS: Absorption, Terahertz radiation, Refractive index, Molecules, Chemical compounds, Mirrors, Laser beam diagnostics, Terahertz spectroscopy, Scattering, Visualization

Read Abstract +

Proceedings Article | 23 August 2013 Paper

Paper

Characterization of terahertz emission from laser-induced air plasma under different pump power

Yi-man Luo, Liang-liang Zhang, Ji Zhao, Cun-lin Zhang

Proceedings Volume 8909, 89090F (2013) https://doi.org/10.1117/12.2032924

KEYWORDS: Terahertz radiation, Plasma, Four wave mixing, Modulation, Mirrors, Crystals, Laser crystals, Imaging spectroscopy, Linear filtering, Silicon

Read Abstract +

Proceedings Article | 23 August 2013 Paper

Paper

Switchable terahertz metamaterials with dual resonance

Xu Zhao, Jun He, Cunlin Zhang

Proceedings Volume 8909, 89090Q (2013) https://doi.org/10.1117/12.2034081

KEYWORDS: Metamaterials, Terahertz radiation, Finite-difference time-domain method, Terahertz metamaterials, Switching, Sensors, Terahertz technology, Terahertz spectroscopy, Imaging spectroscopy, Absorption

Read Abstract +

SPIE Journal Paper | 31 January 2013 Open Access

Open Access

Developing signal processing method for recognizing defects in metal samples based on heat diffusion properties in sonic infrared image sequences

Zhi Zeng, Ning Tao, Lichun Feng, Cunlin Zhang, Xiaoyan Han

OE, Vol. 52, Issue 06, 061309, (January 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.6.061309

KEYWORDS: Infrared imaging, Infrared radiation, Metals, Diffusion, Signal processing, Signal detection, Interference (communication), Image processing, Optical engineering, Defect detection

Read Abstract +

Proceedings Article | 11 December 2012 Paper

Paper

One dimension high range resolution profile of terahertz radar

Meiyan Liang, Bangze Zeng, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 8562, 856224 (2012) https://doi.org/10.1117/12.1000077

KEYWORDS: Radar, Terahertz radiation, Signal processing, Radar signal processing, Digital signal processing, Chromium, Control systems, Microwave radiation, Image resolution, Imaging spectroscopy

Read Abstract +

Proceedings Article | 11 December 2012 Paper

Paper

An improved algorithm based on ROMP used in TH imaging

Ze Li, Xiaohua Liu, Yuejin Zhao, Cunlin Zhang

Proceedings Volume 8562, 856222 (2012) https://doi.org/10.1117/12.999798

KEYWORDS: Reconstruction algorithms, Detection theory, Detection and tracking algorithms, Image quality, Algorithms, Signal processing, Compressed sensing, Evolutionary algorithms, Imaging spectroscopy, Lithium

Read Abstract +

Proceedings Article | 5 December 2012 Paper

Paper

An experimental 0.2 THz stepped frequency radar system for the target detection

Bangze Zeng, Meiyan Liang, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 8562, 85621D (2012) https://doi.org/10.1117/12.999866

KEYWORDS: Radar, Imaging systems, Radar imaging, Terahertz radiation, Image resolution, Target detection, Antennas, Imaging spectroscopy, Microwave radiation, Extremely high frequency

Read Abstract +

Proceedings Article | 5 December 2012 Paper

Paper

Optimization for the heating pulse used in infrared thermography non-destructive testing technology

Guo Li, Lichun Feng, Cunlin Zhang

Proceedings Volume 8562, 856221 (2012) https://doi.org/10.1117/12.999620

KEYWORDS: Nondestructive evaluation, Thermography, Fourier transforms, Infrared radiation, Thermal effects, Infrared imaging, Infrared detectors, Infrared sensors, Lamps, Xenon

Read Abstract +

Proceedings Article | 5 December 2012 Paper

Paper

Computer processing of image captured by the passive THz imaging device as an effective tool for its de-noising

Vyacheslav Trofimov, Vladislav Trofimov, Igor Kuchik, Cun-lin Zhang, Chao Deng, Yuan-meng Zhao, Xin Zhang

Proceedings Volume 8562, 856207 (2012) https://doi.org/10.1117/12.981860

KEYWORDS: Terahertz radiation, Image processing, Image quality, Cameras, Imaging devices, Explosives, Ceramics, Fourier transforms, Correlation function, Computer security

Read Abstract +

Proceedings Article | 26 November 2012 Paper

Paper

Design and optimization of chopper based on Labview

Guo Li, Xiaolei Wang, Lichun Feng, Cunlin Zhang

Proceedings Volume 8557, 85571V (2012) https://doi.org/10.1117/12.999863

KEYWORDS: Modulation, LabVIEW, Data acquisition, Clocks, Receivers, Signal detection, Feedback signals, Frequency modulation, Adaptive optics, Physics

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Paper

Research of processing method for infrared image of sandwich structure composite

Yan Huo, Cun-Lin Zhang, Chun-Yu Hu, Chun-Guang Li

Proceedings Volume 8417, 84170K (2012) https://doi.org/10.1117/12.978926

KEYWORDS: Image processing, Thermography, Infrared imaging, Infrared radiation, Composites, Image enhancement, Infrared detectors, Aluminum, Infrared cameras, Aerospace engineering

Read Abstract +

Proceedings Article | 13 October 2011 Paper

Paper

Possible way for increasing the quality of imaging from THz passive device

Vyacheslav Trofimov, Vladislav Trofimov, Chao Deng, Yuan-meng Zhao, Cun-lin Zhang, Xin Zhang

Proceedings Volume 8189, 81890L (2011) https://doi.org/10.1117/12.897900

KEYWORDS: Terahertz radiation, Imaging systems, Image quality, Spatial filters, Image filtering, Sensors, Explosives, Opacity, Liquids, Firearms

Read Abstract +

Proceedings Article | 8 September 2011 Paper

Paper

Bonding quality evaluation of wind turbine blades by pulsed thermography

Rui-gang He, De-juan Kong, Zhi Zeng, Ning Tao, Cun-lin Zhang, Li-chun Feng

Proceedings Volume 8193, 81933G (2011) https://doi.org/10.1117/12.900770

KEYWORDS: Thermography, Inspection, Nondestructive evaluation, Ultrasonics, Infrared radiation, Infrared imaging, Infrared cameras, Image processing, Imaging spectroscopy, Wind turbine technology

Read Abstract +

Proceedings Article | 8 September 2011 Paper

Paper

The effect of depth on the quantitative estimation of defect size using pulsed thermography

Tie Feng, Cunlin Zhang, Lichun Feng

Proceedings Volume 8193, 81933B (2011) https://doi.org/10.1117/12.900752

KEYWORDS: Thermography, 3D modeling, Thermal modeling, Finite element methods, Metals, Aluminum, Heat flux, Nondestructive evaluation, Infrared radiation, 3D metrology

Read Abstract +

Proceedings Article | 8 September 2011 Paper

Paper

The application of pulsed thermography in the inspection of wind turbine blades

Ning Tao, Zhi Zeng, Lichun Feng, Xiaoli Li, Yeshu Li, Cunlin Zhang

Proceedings Volume 8193, 819319 (2011) https://doi.org/10.1117/12.899646

KEYWORDS: Thermography, Inspection, Manufacturing, Wind energy, Nondestructive evaluation, Glasses, Adhesives, Infrared cameras, Safety, Wind turbine technology

Read Abstract +

Wind power is a very promising source of environmentally safe, renewable, and the fast-growing energy source over the past several years. The blades of a wind turbine are considered to be an important component in wind turbine generator. Currently, bigger and more powerful wind blades are being built to increase the swept area of the turbine and extract more energy from the wind. Correspondingly, more capital cost is invested in manufacture and service. In order to reduce damage possibility and extend the wind turbine blades life, there are increasing demands for the inspection of wind turbine blades in the manufacturing factory and on site inspection. The regular inspections of wind turbine blades are done normally by using visual inspection and tapping test. To improve the safety of wind turbine blades, nondestructive testing technique using pulsed thermography is being investigated in this study. This technique utilized an active pulsed heating source that is applied on the outer surface of wind turbine blades, and an infrared camera to monitor the surface temperature distribution controlled by a computer. Reflective pulsed thermography was directly applied on several full scale wind blades, surface and subsurface defects, such as air bubbles, pin holes, edge bonding, etc. were clearly detected. Several specimens were intentionally manufactured to simulate the glue faults between supporting spars and glass fiber reinforced plastic (GFRP) shells with different thickness. Afterwards they were inspected by using pulsed thermography in laboratory. The current test results indicated that pulsed thermography has the potential for the detection of glue faults at least about 15mm thickness GFRP shell. It is shown that pulsed thermography maybe provide a powerful non-contacting technique for the inspection of wind turbine blades as well in the workshop just after the production or in the field that before and after installation of the wind blades and during reparation.

Proceedings Article | 8 September 2011 Paper

Paper

Pulsed thermography detection of water and hydraulic oil intrusion in the honeycomb sandwich structure composite

Shi-bin Zhao, Cun-lin Zhang, Nai-ming Wu

Proceedings Volume 8193, 819337 (2011) https://doi.org/10.1117/12.900716

KEYWORDS: Liquids, Thermography, Nondestructive evaluation, Composites, Lamps, Skin, Infrared cameras, Imaging systems, Oxygen, Roads

Read Abstract +

Proceedings Article | 3 June 2011 Paper

Paper

2D signature for detection and identification of drugs

Vyacheslav Trofimov, Svetlana Varentsova, Jingling Shen, Cunlin Zhang, Qingli Zhou, Yulei Shi

Proceedings Volume 8040, 804007 (2011) https://doi.org/10.1117/12.883674

KEYWORDS: Terahertz radiation, Picosecond phenomena, Absorption, Transparency, Signal detection, Biological research, Chemical analysis, Explosives, Fourier transforms, Visible radiation

Read Abstract +

Proceedings Article | 17 November 2010 Paper

Paper

Terahertz photon production from cold atoms inside an optical cavity

Cunlin Zhang, Jingwu Ye

Proceedings Volume 7854, 78540E (2010) https://doi.org/10.1117/12.870433

KEYWORDS: Chemical species, Optical resonators, Diffusion, Thermodynamics, Statistical modeling, Terahertz radiation, Quantum information processing, Rubidium

Read Abstract +

Proceedings Article | 16 November 2010 Paper

Paper

Noncontact ultrasonic excitation thermography inspection technique

Ning Tao, Zhi Zeng, Lichun Feng, Dapeng Chen, Yue Li, Cunlin Zhang

Proceedings Volume 7854, 78543S (2010) https://doi.org/10.1117/12.880769

KEYWORDS: Ultrasonics, Thermography, Acoustics, Ultrasonography, Infrared cameras, Nondestructive evaluation, Transducers, Inspection, Aluminum, Infrared imaging

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Image fusion based on millimeter-wave for concealed weapon detection

Weiwen Zhu, Yuejin Zhao, Chao Deng, Cunlin Zhang, Yalin Zhang, Jingshui Zhang

Proceedings Volume 7854, 785414 (2010) https://doi.org/10.1117/12.869725

KEYWORDS: Image fusion, Image processing, Passive millimeter wave sensors, Extremely high frequency, Wavelet transforms, Weapons, Image resolution, Image enhancement, Imaging systems, Image sensors

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Optical properties study on some nematic liquid crystals in the terahertz range

Huijuan Sun, Qingli Zhou, Yulei Shi, Dongmei Zhao, Cunlin Zhang

Proceedings Volume 7854, 78541A (2010) https://doi.org/10.1117/12.870415

KEYWORDS: Liquid crystals, Terahertz radiation, Absorption, Spectroscopy, Optical properties, Physics, Chemistry, LCDs, Electro optics, Fourier transforms

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Reflective mode terahertz time domain spectroscopy for sealed liquid detection

Zhen-Wei Zhang, Kai-Jun Mu, Liang-Liang Zhang, Cun-Lin Zhang

Proceedings Volume 7854, 78541F (2010) https://doi.org/10.1117/12.870441

KEYWORDS: Terahertz spectroscopy, Liquids, Terahertz radiation, Spectroscopy, Interfaces, Water, Bioalcohols, Mirrors, Reflectivity, Absorption

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Characterization of terahertz emission from a laser-induced air plasma with a dc biased field

Kaijun Mu, Fei Yu, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 7854, 78541B (2010) https://doi.org/10.1117/12.870431

KEYWORDS: Terahertz radiation, Plasma, Polarization, Electrodes, Modulation, Crystals, Plasma generation, Wave propagation, Mirrors, Sensors

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Polarization-controlled THz spectroscopic imaging for nondestructive inspection

LiangLiang Zhang, Fei Yu, Hua Zhong, Chao Deng, YongJu Zheng, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 7854, 78541C (2010) https://doi.org/10.1117/12.869075

KEYWORDS: Terahertz radiation, Polarization, Imaging spectroscopy, Spectroscopy, Inspection, Anisotropy, Nondestructive evaluation, Terahertz spectroscopy, Plasma, Electro optics

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Terahertz wave opto-mechanical scanner for security application

Chao Deng, Yongju Zheng, Cunlin Zhang

Proceedings Volume 7854, 78541R (2010) https://doi.org/10.1117/12.870519

KEYWORDS: Scanners, Mirrors, Terahertz radiation, Millimeter wave imaging, Aluminum, Imaging systems, Terahertz technology, Digital image processing, Sensors, Visible radiation

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

A detection technology of THz based on surface plasmon resonance

Bo Su, Guoteng Duan, Cunlin Zhang

Proceedings Volume 7854, 78541H (2010) https://doi.org/10.1117/12.870451

KEYWORDS: Sensors, Surface plasmons, Terahertz radiation, Gold, Silicon, Prisms, Absorption, Thin films, Reflectivity, Metals

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Terahertz spectroscopy properties of the selected engine oils

Shouming Zhu, Kun Zhao, Tian Lu, Songqing Zhao, Qingli Zhou, Yulei Shi, Dongmei Zhao, Cunlin Zhang

Proceedings Volume 7854, 78540A (2010) https://doi.org/10.1117/12.868883

KEYWORDS: Terahertz radiation, Seaborgium, Shape memory alloys, Refractive index, Absorption, Terahertz spectroscopy, Spectroscopy, Solids, Optical properties, Physics

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Time-domain terahertz transmission absorption of (Ca[sub]0.5+x[/sub] Sr[sub]0.5-x[/sub])[(Al[sub]0.5[/sub]Nb[sub]0.5[/sub])[sub]0.5[/sub]Ti[sub]0.5[/sub]]O[sub]3[/sub] complex perovskite

Mingzhe Hu, Chunya Luo, Cunlin Zhang, Haoshuang Gu

Proceedings Volume 7854, 785411 (2010) https://doi.org/10.1117/12.870280

KEYWORDS: Ceramics, Absorption, Terahertz radiation, Dielectrics, Tolerancing, Crystals, Diffraction, Oxygen, Physics, Perovskite

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

The birefringence property of magnesium fluoride crystal in THz frequency region

Fei Yu, LiangLiang Zhang, Hua Zhong, Chao Deng, CunLin Zhang

Proceedings Volume 7854, 78541S (2010) https://doi.org/10.1117/12.868456

KEYWORDS: Magnesium fluoride, Terahertz radiation, Crystals, Birefringence, Wave plates, Absorption, Refractive index, Polarization, Crystal optics, Optical properties

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Abnormal enhancement of terahertz signal by using a hole

Dongmei Zhao, Yulei Shi, Qingli Zhou, Lei Li, Cunlin Zhang

Proceedings Volume 7854, 78542S (2010) https://doi.org/10.1117/12.869646

KEYWORDS: Terahertz radiation, Terahertz spectroscopy, Near field diffraction, Signal detection, Spectroscopy, Sensors, Signal to noise ratio, Detection theory, Mirrors, Modulation

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

The observation of terahertz spectra of all-trans beta-carotene molecule

Jian Zuo, Liangliang Zhang, Fei Yu, Zhenwei Zhang, Cunlin Zhang

Proceedings Volume 7854, 785439 (2010) https://doi.org/10.1117/12.870093

KEYWORDS: Terahertz radiation, Molecules, Spectroscopy, Molecular spectroscopy, Terahertz spectroscopy, Absorption, Fourier transforms, Fourier spectroscopy, Molecular interactions, Raman spectroscopy

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Transient surface photoconductivity of GaAs emitter studied by terahertz pump-emission spectroscopy

Yulei Shi, Qing-li Zhou, Cunlin Zhang

Proceedings Volume 7854, 78543B (2010) https://doi.org/10.1117/12.870162

KEYWORDS: Terahertz radiation, Picosecond phenomena, Gallium arsenide, Terahertz spectroscopy, Spectroscopy, Ultrafast phenomena, Signal detection, Carrier dynamics, Semiconductors, Scattering

Read Abstract +

Proceedings Article | 5 November 2010 Paper

Paper

Carrier dynamics of doped silicon measured by femtosecond pump-terahertz probe spectroscopy

QingLi Zhou, YuLei Shi, Tong Li, Bin Jin, DongMei Zhao, CunLin Zhang

Proceedings Volume 7854, 785430 (2010) https://doi.org/10.1117/12.869894

KEYWORDS: Carrier dynamics, Terahertz radiation, Silicon, Electrons, Femtosecond phenomena, Refractive index, Semiconductors, Spectroscopy, Data modeling, Imaging spectroscopy

Read Abstract +

Proceedings Article | 22 October 2010 Paper

Paper

Study on the detectivity of the pulsed infrared thermograph

Yan Huo, Hui-juan Li, Yue-jin Zhao, Cun-lin Zhang

Proceedings Volume 7658, 765853 (2010) https://doi.org/10.1117/12.865341

KEYWORDS: Thermography, Infrared radiation, Infrared detectors, Infrared cameras, Inspection, Cameras, Defect detection, Nondestructive evaluation, Statistical analysis, Aluminum

Read Abstract +

Proceedings Article | 22 October 2010 Paper

Paper

Nondestructive testing of rocket engine injector panel using ultrasonic burst phase thermography

Dapeng Chen, Cunlin Zhang, Naiming Wu, Zhi Zeng, Chunfei Xing, Yue Li, Shibin Zhao, Tao Ning

Proceedings Volume 7658, 76585P (2010) https://doi.org/10.1117/12.865709

KEYWORDS: Thermography, Ultrasonics, Nondestructive evaluation, Rockets, Infrared cameras, Infrared imaging, Infrared radiation, Liquids, Image processing, Safety

Read Abstract +

Proceedings Article | 19 November 2009 Paper

Paper

Terahertz emission of photoconductive antenna under different biased electrical fields

Lizhong Wu, Guozhong Zhao, Cunlin Zhang

Proceedings Volume 7512, 75120F (2009) https://doi.org/10.1117/12.837503

KEYWORDS: Terahertz radiation, Antennas, Signal to noise ratio, Signal generators, Gallium arsenide, Femtosecond phenomena, Crystals, Amplifiers, Imaging spectroscopy, Optoelectronics

Read Abstract +

Proceedings Article | 19 November 2009 Paper

Paper

THz transmission through Sierpinski fractal structures on copper foils by FDTD simulation

Xiaoyan Wang, Guozhong Zhao, He Wang, Cunlin Zhang

Proceedings Volume 7512, 75120C (2009) https://doi.org/10.1117/12.837152

KEYWORDS: Terahertz radiation, Fractal analysis, Reflection, Electromagnetism, Finite-difference time-domain method, Resonance enhancement, Waveguides, Copper, Wave propagation, Radio propagation

Read Abstract +

Proceedings Article | 3 September 2009 Paper

Paper

The restoration of CW THz images based on phase analysis

Qian Song, Fei Yu, Yuejin Zhao, Cunlin Zhang, Qian Yu, Ming Liu, Xiaohua Liu

Proceedings Volume 7443, 74432G (2009) https://doi.org/10.1117/12.825306

KEYWORDS: Terahertz radiation, Imaging systems, Image fusion, Image filtering, Wavelets, Image processing, Image analysis, Aluminum, Mirrors

Read Abstract +

Proceedings Article | 5 August 2009 Paper

Paper

Applications of terahertz spectroscopy and imaging

Cunlin Zhang, Kaijun Mu

Proceedings Volume 7385, 738504 (2009) https://doi.org/10.1117/12.836553

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Absorption, Imaging systems, Polarization, Spectroscopy, Explosives, Phase imaging, Image quality, Feature extraction

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Terahertz spectroscopic investigations of vitamin molecules

Bin Yu, Zhen Huang, Xiaoyan Wang, Guozhong Zhao, Cunlin Zhang

Proceedings Volume 7158, 715815 (2009) https://doi.org/10.1117/12.806216

KEYWORDS: Terahertz radiation, Absorption, Refractive index, Molecules, Spectroscopy, Phonons, Terahertz spectroscopy, Molecular spectroscopy, Absorbance, Temperature metrology

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Identification of chemical materials using reference-free terahertz transmission spectroscopy and artificial neural networks

Weiwei Li, Hua Zhong, Liangliang Zhang, Chao Deng, Cunlin Zhang

Proceedings Volume 7158, 71581M (2009) https://doi.org/10.1117/12.805705

KEYWORDS: Terahertz radiation, Spectroscopy, Terahertz spectroscopy, Artificial neural networks, Absorption, Imaging spectroscopy, Explosives, Neural networks, Image classification, Pattern recognition

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Terahertz electromagnetic response of split ring resonators

Ziyu Yan, Xue Jiang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 7158, 715811 (2009) https://doi.org/10.1117/12.805636

KEYWORDS: Absorption, Magnetism, Terahertz radiation, Metals, Gallium arsenide, Electromagnetism, Refractive index, Split ring resonators, Terahertz spectroscopy, Copper

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Terahertz spectroscopic investigations of explosives and the related compounds

Ruishu Feng, Weiwei Li, Qingli Zhou, Kaijun Mu, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 7158, 71580W (2009) https://doi.org/10.1117/12.805702

KEYWORDS: Explosives, Absorption, Terahertz radiation, Spectroscopy, Refractive index, Molecules, Terahertz spectroscopy, Sensors, Solids, Physics

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Study on terahertz emission properties of bow-tie photoconductive antenna

Zhen Huang, Bin Yu, Guozhong Zhao, Cunlin Zhang, Lijie Cui, Yiyang Li

Proceedings Volume 7158, 715812 (2009) https://doi.org/10.1117/12.805658

KEYWORDS: Antennas, Terahertz radiation, Semiconductors, Photoresistors, Laser beam diagnostics, Sensors, Femtosecond phenomena, Spectroscopy, Radon, Lithium

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Terahertz wave two-dimensional transmission imaging with a backward wave oscillator

Hongyang Yuan, Xinhao Ge, Cunlin Zhang

Proceedings Volume 7158, 71580T (2009) https://doi.org/10.1117/12.805633

KEYWORDS: Terahertz radiation, Imaging systems, Nondestructive evaluation, Oscillators, Sensors, Digital image processing, Continuous wave operation, Image processing, Visible radiation, Inspection

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Terahertz wave reference-free transmission spectroscopy of aminophenol

Chao Deng, Hua Zhong, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 7158, 71580U (2009) https://doi.org/10.1117/12.805697

KEYWORDS: Terahertz radiation, Absorption, Spectroscopy, Absorbance, Terahertz spectroscopy, Imaging spectroscopy, Refractive index, System identification, Feature extraction, Physics

Read Abstract +

We present a reference-free transmission spectroscopy of two kinds of aminophenol (Tyrosine and Phenylalanine) using terahertz time domain spectroscopy (THz-TDS). The THz band, which refers to the spectral region between 0.1 to 10 THz, offers a plethora of fingerprints of many chemical and biological materials. Within the past few years, efforts have been focused on exploiting the broadband nature of the THz time domain spectroscopy (THz-TDS) system for material identification and characterization. The conventional spectroscopic sensing method involves measuring both the terahertz signal carrying the sample information and a reference terahertz signal. In transmission geometry measurement, the absorption peaks of the sample material are found by taking the logarithm of the power spectrum of the transmitted signal beam divided by a reference power spectrum. In this work, we propose a reference-free approach to extract the absorption feature in THz transmission spectroscopy. The samples are identified by their absorption peaks extracted from the negative first-order derivative of the sample signal phase divided by the frequency. Unlike in conventional transmission spectroscopy measurement, in this method, the amplitude spectrum of the terahertz signal is not considered at all. Instead, the absorption features are extracted exclusively from the phase information by taking advantage of the almost-linear phase spectrum of terahertz pulses and the correlation between dispersion and absorption. It is also noted that the spectral phase of the terahertz pulse can be determined with far greater accuracy than the amplitude, which makes this method even more favorable. We measured two kinds of aminophenol (Tyrosine and Phenylalanine), and calculated the absorbance spectrum of each by both methods: taking the ratio between the power spectra of the sample signal and the reference signal and the reference-free phase spectrum of each material. The agreement between the positions of the absorption lines calculated from both methods indicates that the reference-free method is valid.

Proceedings Article | 9 February 2009 Paper

Paper

The quantitative assessment of small structure imaging ability by terahertz wave

Kun Yang, Guozhong Zhao, Chengsen Liang, Cunlin Zhang

Proceedings Volume 7158, 71580R (2009) https://doi.org/10.1117/12.806685

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Imaging systems, Electro optical modeling, Terahertz spectroscopy, Crystals, Spectroscopy, Spatial resolution, Beam splitters, Computer aided design

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

A phase feature extraction technique for terahertz reflection spectroscopy

Cunlin Zhang, Hua Zhong, Liangliang Zhang

Proceedings Volume 7158, 71580Q (2009) https://doi.org/10.1117/12.807220

KEYWORDS: Terahertz radiation, Absorption, Feature extraction, Terahertz spectroscopy, Humidity, Reflectance spectroscopy, Reflection, Spectroscopy, Signal attenuation, Refractive index

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Feature extraction and identification of explosive materials in reflective terahertz spectroscopic imaging system

Yu Wang, Liangliang Zhang, Chao Deng, Weiwei Li, Hua Zhong, Cunlin Zhang

Proceedings Volume 7158, 71580V (2009) https://doi.org/10.1117/12.805641

KEYWORDS: Terahertz radiation, Reflectivity, Reflectance spectroscopy, Explosives, Spectroscopy, Imaging systems, Imaging spectroscopy, Feature extraction, Absorption, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 9 February 2009 Paper

Paper

Investigation of transmission enhancement of THz radiation through subwavelength fractal structures of copper foils by FDTD simulation

Wei Meng, Guozhong Zhao, Tianhua Meng, Cunlin Zhang

Proceedings Volume 7158, 715814 (2009) https://doi.org/10.1117/12.806215

KEYWORDS: Terahertz radiation, Fractal analysis, Copper, Finite-difference time-domain method, Electromagnetism, Resonance enhancement, Terahertz spectroscopy, Imaging spectroscopy, Radio propagation, Photonic devices

Read Abstract +

Proceedings Article | 3 February 2009 Paper

Paper

The ultrafast photoconductive characteristics of GaAs bulk investigated by optical-pump terahertz probe spectroscopy

Bin Jin, Qing-li Zhou, Cunlin Zhang

Proceedings Volume 7157, 71570Q (2009) https://doi.org/10.1117/12.807030

KEYWORDS: Gallium arsenide, Terahertz radiation, Spectroscopy, Ultrafast laser spectroscopy, Terahertz spectroscopy, Transmittance, Imaging spectroscopy, Semiconductors, Free space, Carrier dynamics

Read Abstract +

Proceedings Article | 3 February 2009 Paper

Paper

High speed imaging with CW THz for security

Qian Song, Albert Redo-Sanchez, Yuejin Zhao, Cunlin Zhang

Proceedings Volume 7160, 716016 (2009) https://doi.org/10.1117/12.807197

KEYWORDS: Terahertz radiation, Imaging systems, Diodes, Image processing, Sensors, High speed imaging, Microwave radiation, Spatial resolution, Image acquisition

Read Abstract +

Proceedings Article | 6 February 2008 Paper

Paper

Transmission characteristics of THz radiation through metal subwavelength holes array

Yuan Han, Yueying Jiao, Cunlin Zhang

Proceedings Volume 6823, 68230S (2008) https://doi.org/10.1117/12.760124

KEYWORDS: Metals, Terahertz radiation, Surface plasmons, Thin films, Transmittance, Dielectrics, Imaging spectroscopy, Physics, Sensors, Millimeter wave imaging

Read Abstract +

Proceedings Article | 14 January 2008 Paper

Paper

THz transmission properties of subwavelength fractal structures on the copper foils

Guozhong Zhao, Meng Tianhua, Cunlin Zhang, Guozhen Yang

Proceedings Volume 6840, 68400K (2008) https://doi.org/10.1117/12.755509

KEYWORDS: Terahertz radiation, Fractal analysis, Copper, Spectroscopy, Transmittance, Dielectric polarization, Polarization, Physics, Imaging spectroscopy, Metals

Read Abstract +

Proceedings Article | 14 January 2008 Paper

Paper

Identification of explosives and drugs and inspection of material defects with THz radiation

Cunlin Zhang, Kaijun Mu, Xue Jiang, Yueying Jiao, Liangliang Zhang, Qingli Zhou, Yan Zhang, Jingling Shen, Guoshong Zhao, X.-C. Zhang

Proceedings Volume 6840, 68400S (2008) https://doi.org/10.1117/12.760133

KEYWORDS: Terahertz radiation, Absorption, Imaging systems, Explosives, Imaging spectroscopy, Composites, Carbon, Refractive index, Inspection

Read Abstract +

Proceedings Article | 8 January 2008 Paper

Paper

Ultrasonic infrared thermal wave nondestructive evaluation for crack detection of several aerospace materials

Weichao Xu, Jingling Shen, Cunlin Zhang, Ning Tao, Lichun Feng

Proceedings Volume 6835, 68350V (2008) https://doi.org/10.1117/12.757015

KEYWORDS: Thermography, Ultrasonics, Nondestructive evaluation, Infrared cameras, Infrared radiation, Infrared detectors, Infrared imaging, Cameras, Aerospace engineering, Carbon

Read Abstract +

Proceedings Article | 4 January 2008 Paper

Paper

Vibrational spectrum of PETN investigated in terahertz range

Kaijun Mu, Jun He, Xue Jiang, Weiwei Li, Ruishu Feng, Liangliang Zhang, Qingli Zhou, Cunlin Zhang

Proceedings Volume 6840, 68400I (2008) https://doi.org/10.1117/12.760130

KEYWORDS: Terahertz radiation, Absorption, Solid state physics, Explosives, Spectroscopy, Refractive index, Crystals, Solid state electronics, Physics, Signal to noise ratio

Read Abstract +

Proceedings Article | 18 June 2007 Paper

Paper

Terahertz multiwavelength phase imaging without 2π ambiguity

Yan Zhang, Liangliang Zhang, Cunlin Zhang

Proceedings Volume 6616, 66163L (2007) https://doi.org/10.1117/12.725787

KEYWORDS: Terahertz radiation, Phase imaging, Crystals, Sensors, Imaging technologies, Data processing, Beam splitters, Laser crystals, Millimeter wave imaging, Spectroscopy

Read Abstract +

Proceedings Article | 27 October 2006 Paper

Paper

Optical system for application of THz spectroscopy and THz imaging

Guozhong Zhao, Hongqi Sun, Yan Tian, Cunlin Zhang

Proceedings Volume 6047, 60470U (2006) https://doi.org/10.1117/12.710675

KEYWORDS: Terahertz radiation, Imaging spectroscopy, Spectroscopy, Semiconductors, Imaging systems, Antennas, Signal to noise ratio, Photoresistors, Electro optics, Electromagnetic radiation

Read Abstract +

Proceedings Article | 20 January 2006 Paper

Paper

Data processing methods for terahertz transmitted spectral imaging

Zhengwei Zhang, Weili Cui, Guozhong Zhao, Yan Zhang, Cunlin Zhang

Proceedings Volume 6027, 60270K (2006) https://doi.org/10.1117/12.667898

KEYWORDS: Terahertz radiation, Data processing, Image quality, Imaging spectroscopy, Fourier transforms, Image processing, Refractive index, Absorption, Mirrors, Laser beam diagnostics

Read Abstract +

Proceedings Article | 20 January 2006 Paper

Paper

Iterative reconstruction of wave front from an in-line hologram sequence

Yan Zhang, De-Xiang Zheng, Jing-Ling Sheng, Cun-Lin Zhang, Giancarlo Pedrini

Proceedings Volume 6027, 602729 (2006) https://doi.org/10.1117/12.668204

KEYWORDS: Holograms, Wavefronts, Digital holography, Charge-coupled devices, 3D image reconstruction, Wave propagation, Reconstruction algorithms, Holography, Photosensitive materials, Phase shifts

Read Abstract +

Proceedings Article | 9 February 2005 Paper

Paper

Research on surface modification of nano-zirconia

Wen Chen, Cun-Lin Zhang, Xiao-Yi Yang

Proceedings Volume 5635, (2005) https://doi.org/10.1117/12.577969

KEYWORDS: Bioalcohols, Chemical analysis, Particles, Transmission electron microscopy, FT-IR spectroscopy, Zirconium dioxide, Absorption, Oxygen, Statistical analysis, Analytical research

Read Abstract +

Proceedings Article | 8 February 2005 Paper

Paper

Resins influence on the sensitivity of the CTP plate

Cunlin Zhang, Jiadan Xue, Heling Zhang

Proceedings Volume 5637, (2005) https://doi.org/10.1117/12.580947

KEYWORDS: Ultraviolet radiation, Infrared radiation, Coating, Molecules, Thermography, Infrared lasers, Printing, Barium, Aluminum, Image quality

Read Abstract +

Proceedings Article | 7 February 2005 Paper

Paper

3D locations of the object directly from in-line holograms using the Gabor transform

Yan Zhang, De-Xiang Zheng, Jing-Ling Shen, Cun-Lin Zhang

Proceedings Volume 5636, (2005) https://doi.org/10.1117/12.570465

KEYWORDS: Holograms, Particles, Charge-coupled devices, Digital holography, CCD cameras, Holography, Signal to noise ratio, Computer simulations, Diffraction, Analytical research

Read Abstract +

Proceedings Article | 27 January 2005 Paper

Paper

The thermal cross-linking plate with high quality for CTP with laser

Yang Zhang, Cunlin Zhang, Heling Zhang

Proceedings Volume 5645, (2005) https://doi.org/10.1117/12.573756

KEYWORDS: Printing, Infrared radiation, Infrared imaging, Lithography, Image processing, Infrared lasers, Semiconductor lasers, Modulation, Coating, Aluminum

Read Abstract +

Proceedings Article | 20 January 2005 Paper

Paper

Nanostructured YSZ membranes derived from inorganic salts

Cunlin Zhang, Yang Liao, Shuli He, Defeng Sun, Wen Chen

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.580945

KEYWORDS: Particles, Diffusion, Transmission electron microscopy, Spherical lenses, Photomicroscopy, Nanostructuring, Sol-gels, Oxygen, Crystals, Zirconium dioxide

Read Abstract +

Proceedings Article | 13 January 2005 Paper

Paper

Wetting variation of the zirconia ceramic film by laser

Cunlin Zhang, Defeng Sun, Wen Chen, Xiaoyi Yang

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.580949

KEYWORDS: Ceramics, Oxygen, Zirconium dioxide, Laser therapeutics, Zirconium, Particles, Laser ablation, Printing, Liquids, Coating

Read Abstract +

Proceedings Article | 10 January 2005 Paper

Paper

New algorithm for high-resolution thermal imaging

Cunlin Zhang, Jihua Chen, Ying Hu, Yan Zhang

Proceedings Volume 5640, (2005) https://doi.org/10.1117/12.580941

KEYWORDS: Thermography, Infrared cameras, Infrared imaging, Cameras, Image resolution, Diffusion, Imaging systems, Nondestructive evaluation, Image processing, Wave propagation

Read Abstract +

Proceedings Article | 17 September 2002 Paper

Paper

Thermal plate for lithography and its components

Cunlin Zhang, Qingli Zhou, Shengli Cao

Proceedings Volume 4930, (2002) https://doi.org/10.1117/12.483355

KEYWORDS: Printing, Lithography, Infrared radiation, Infrared imaging, Ultraviolet radiation, Infrared lasers, Thermography, Laser energy, Image acquisition, Modulation

Read Abstract +

Proceedings Article | 13 September 2002 Paper

Paper

Conversion of polarity of nanocrystalline tetragonal zirconia coatings irradiated by laser

Cunlin Zhang, Yang Liao, Xingming Wang, Shuli He, Defeng Sun

Proceedings Volume 4922, (2002) https://doi.org/10.1117/12.483119

KEYWORDS: Zirconium dioxide, Particles, Scanning electron microscopy, Sol-gels, X-ray diffraction, Transparent conducting films, Metals, Crystals, Electron microscopes, Ceramics

Read Abstract +

Proceedings Article | 4 August 1998 Paper

Paper

Photoinitiating systems and photopolymer materials for holography

Cunlin Zhang, Jia Zhao, Jingsuo He, Lidong Li, Yongyuan Yang

Proceedings Volume 3559, (1998) https://doi.org/10.1117/12.318456

KEYWORDS: Holography, Diffraction gratings, Polymerization, Holograms, Holographic materials, Photopolymerization, Diffraction, Visible radiation, Absorption, Photopolymers

Read Abstract +

Proceedings Article | 17 September 1993 Paper

Paper

New initiation system for photopolymer holographic recording material

Cunlin Zhang, Meiwen Yu, Yongyuan Yang, Jun Li, Er-jian Wang

Proceedings Volume 1914, (1993) https://doi.org/10.1117/12.155012

KEYWORDS: Holography, Polymerization, Holograms, Holographic materials, Optical filters, Photopolymerization, Argon ion lasers, Polymers, Photolysis, Imaging systems

Read Abstract +

Showing 5 of 207 publications

Proceedings Volume Editor (18)

SPIE Conference Volume | 13 December 2023

Infrared, Millimeter-Wave, and Terahertz Technologies X

SPIE Conference Volume | 21 December 2022

Infrared, Millimeter-Wave, and Terahertz Technologies IX

SPIE Conference Volume | 2 November 2021

Infrared, Millimeter-Wave, and Terahertz Technologies VIII

SPIE Conference Volume | 10 November 2020

Infrared, Millimeter-Wave, and Terahertz Technologies VII

SPIE Conference Volume | 12 March 2020

2019 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications

Showing 5 of 18 publications

Conference Committee Involvement (21)

Infrared, Millimeter-Wave, and Terahertz Technologies XI

13 October 2024 | Nantong, Jiangsu, China

Infrared, Millimeter-Wave, and Terahertz Technologies X

15 October 2023 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies IX

5 December 2022 | Online Only, China

2021 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications

12 November 2021 | Online Only, China

Infrared, Millimeter-Wave, and Terahertz Technologies VIII

10 October 2021 | Nantong, JS, China

Conference on Advanced Laser Technology and Application

30 November 2020 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies VII

12 October 2020 | Online Only, China

International Conference on Optical Instruments and Technology 2019: IRMMW-THz Technologies and Applications

26 October 2019 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies VI

21 October 2019 | Hangzhou, China

Infrared, Millimeter-Wave, and Terahertz Technologies V

12 October 2018 | Beijing, China

International Conference on Optical Instruments and Technology 2017: THz/Infrared Technologies and Applications

28 October 2017 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies IV

12 October 2016 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies III

9 October 2014 | Beijing, China

2015 International Conference on Optical Instruments and Technology: THz Technologies and Their Applications

8 May 2014 | Beijing, China

ISPDI 2012: Terahertz Technologies and Applications

25 June 2013 | Beijing, China

Infrared, Millimeter-Wave, and Terahertz Technologies II

5 November 2012 | Beijing, China

Terahertz Wave Technologies and Applications

24 May 2011 | Beijing, China

Infrared, Millimeter Wave, and Terahertz Technologies

18 October 2010 | Beijing, China

Optoelectronic Information Security

19 October 2009 | Shanghai, China

International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications

17 June 2009 | Beijing, China

Terahertz Photonics

12 November 2007 | Beijing, China

Showing 5 of 21 Conference Committees

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement