Dr. Takayuki Watanabe Profile

Dr. Takayuki Watanabe

Assistant Professor at Tohoku Univ

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Author

Publications (17)

Proceedings Article | 6 September 2019 Paper

Graphene-based van der Waals heterostructures towards a new type of terahertz quantum-cascade lasers

Takayuki Watanabe, Deepika Yadav, Stephane Boubanga Tombet, Akira Satou, Alexander Dubinov, Victor Ryzhii, Taiichi Otsuji

Proceedings Volume 11124, 1112406 (2019) https://doi.org/10.1117/12.2529016

KEYWORDS: Terahertz radiation, Heterojunctions, Graphene, Quantum cascade lasers, Plasmons, Quantum efficiency, Surface plasmons, Waveguides, Transistors

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Proceedings Article | 13 May 2019 Paper

Terahertz light amplification of stimulated emission of radiation in current-injection graphene channel transistor

S. Boubanga-Tombet, D. Yadav, T. Watanabe, A. Satou, W. Knap, V. Popov, V. Ryzhii, T. Otsuji

Proceedings Volume 10982, 109822V (2019) https://doi.org/10.1117/12.2520092

KEYWORDS: Terahertz radiation, Graphene, Plasmons, Plasmonics, Transistors, Optical amplifiers, Absorption, Modulation, Field effect transistors, Physics

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Proceedings Article | 1 March 2019 Presentation + Paper

Graphene-based 2D-heterostructures for terahertz lasers and amplifiers

D. Yadav, S. Boubanga-Tombet, A. Satou, T. Tamamushi, T. Watanabe, T. Suemitsu, H. Fukidome, M. Suemitsu, A. Dubinov, V. Popov, M. Ryzhii, V. Mitin, M. Shur, V. Ryzhii, T. Otsuji

Proceedings Volume 10917, 109170G (2019) https://doi.org/10.1117/12.2516494

KEYWORDS: Terahertz radiation, Graphene, Electrons, Photons, Plasmons, Scattering, Plasmonics, Optical pumping, Transistors, Optical amplifiers

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Proceedings Article | 27 January 2017 Paper

Current-injection terahertz lasing in a distributed-feedback dual-gate graphene-channel transistor

G. Tamamushi, T. Watanabe, J. Mitsushio, A. Dubinov, A. Satou, T. Suemitsu, M. Ryzhii, V. Ryzhii, T. Otsuji

Proceedings Volume 10111, 1011126 (2017) https://doi.org/10.1117/12.2249983

KEYWORDS: Graphene, Terahertz radiation, Transistors, Electrons, Optical pumping, Scattering, Phonons, Dielectrics, Field effect transistors, Picosecond phenomena

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Proceedings Article | 29 April 2016 Paper

Cooperative promotion of plasma instabilities for emission of terahertz radiation in an asymmetric dual-grating-gate graphene-channel FET

Akira Satou, Yuki Koseki, Takayuki Watanabe, Vyacheslav Popov, Victor Ryzhii, Taiichi Otsuji

Proceedings Volume 9856, 98560F (2016) https://doi.org/10.1117/12.2227438

KEYWORDS: Plasmons, Terahertz radiation, Transistors, Graphene, Electrons, Received signal strength, Plasma, Field effect transistors, Doping, Electronic components, Scattering, Dielectrics

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Proceedings Article | 14 March 2015 Paper

Room-temperature zero-bias plasmonic THz detection by asymmetric dual-grating-gate HEMT

T. Watanabe, T. Kawasaki, A. Satou, S. Boubanga Tombet, T. Suemitsu, G. Ducournau, D. Coquillat, W. Knap, H. Minamide, H. Ito, Vyacheslav Popov, Yahya Meziani, T. Otsuji

Proceedings Volume 9362, 93620F (2015) https://doi.org/10.1117/12.2079184

KEYWORDS: Plasmons, Terahertz radiation, Plasmonics, Field effect transistors, Terahertz detection, Sensors, Phase velocity, Quantum efficiency, Antennas, Diffraction

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Proceedings Article | 10 March 2015 Paper

Recent advances in the research toward graphene-based terahertz lasers

Taiichi Otsuji, Akira Satou, Takayuki Watanabe, Stephane Boubanga-Tombet, Maxim Ryzhii, Alexander Dubinov, Vyacheslav Popov, Vladimir Mitin, Michael Shur, Victor Ryzhii

Proceedings Volume 9382, 938219 (2015) https://doi.org/10.1117/12.2079411

KEYWORDS: Graphene, Terahertz radiation, Plasmons, Electrons, Picosecond phenomena, Scattering, Heterojunctions, Optical pumping, Optical microcavities, Phonons

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Proceedings Article | 5 September 2014 Paper

Graphene plasmonic heterostructures for new types of terahertz lasers

Taiichi Otsuji, Victor Ryzhii, Stephane Albon Boubanga Tombet, Takayuki Watanabe, Akira Satou, Maxim Ryzhii, Alexander Dubinov, Vladimir Aleshkin, Vyacheslav Popov, Vladimir Mitin, Michael Shur

Proceedings Volume 9199, 91990F (2014) https://doi.org/10.1117/12.2061510

KEYWORDS: Graphene, Terahertz radiation, Plasmons, Photons, Heterojunctions, Plasmonics, Optical microcavities, Near field optics, Absorption, Electrons

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Proceedings Article | 21 May 2014 Paper

Giant terahertz gain by excitation of surface plasmon polarities in optically pumped graphene

Taiichi Otsuji, Takayuki Watanabe, Stephane Tombet, Akira Satou, Alexander Dubinov, Vladimir Aleshkin, Vladimir Mitin, Victor Ryzhii

Proceedings Volume 9102, 91020I (2014) https://doi.org/10.1117/12.2055376

KEYWORDS: Terahertz radiation, Graphene, Optical pumping, Surface plasmon polaritons, Plasmons, Near field optics, Photon polarization, Electrons, Polarization, Absorption

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Proceedings Article | 31 January 2014 Paper

Graphene active plasmonics and their applications to terahertz lasers and sensors

Taiichi Otsuji, Akira Satou, Takayuki Watanabe, Alexander Dubinov, Vyacheslav Popov, Stephane Albon Boubanga Tombet, Vladimir Mitin, Victor Ryzhii

Proceedings Volume 8993, 899327 (2014) https://doi.org/10.1117/12.2042328

KEYWORDS: Graphene, Terahertz radiation, Plasmons, Sensors, Photons, Absorption, Optical microcavities, Plasmonics, Active plasmonics, Absorbance

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SPIE Journal Paper | 27 November 2013 Open Access

Emission and detection of terahertz radiation using two-dimensional plasmons in semiconductor nanoheterostructures for nondestructive evaluations

Taiichi Otsuji, Takayuki Watanabe, Stephane Albon Boubanga Tombet, Akira Satou, Victor Ryzhii, Vyacheslav Popov, Wojciech Knap

OE, Vol. 53, Issue 03, 031206, (November 2013) https://doi.org/10.1117/12.10.1117/1.OE.53.3.031206

KEYWORDS: Terahertz radiation, Plasmons, Field effect transistors, Electrons, Plasma, Sensors, Millimeter wave sensors, Nondestructive evaluation, Received signal strength, Plasmonics

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Proceedings Article | 31 May 2013 Paper

Graphene active plasmonic metamaterials for new types of terahertz lasers

Taiichi Otsuji, Takayuki Watanabe, Akira Satou, Vyacheslav Popov, Victor Ryzhii

Proceedings Volume 8716, 87160P (2013) https://doi.org/10.1117/12.2019717

KEYWORDS: Graphene, Plasmons, Terahertz radiation, Optical microcavities, Photons, Absorption, Plasmonics, Metamaterials, Plasma, Electromagnetism

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Proceedings Article | 29 May 2013 Paper

Emission and detection of terahertz radiation using two dimensional plasmons in semiconductor nano-heterostructures for nondestructive evaluations

Taiichi Otsuji, Takayuki Watanabe, Stephane Albon Boubanga Tombet, Akira Satou, Victor Ryzhii, Vyacheslav Popov, Wojciech Knap

Proceedings Volume 8725, 87250F (2013) https://doi.org/10.1117/12.2015089

KEYWORDS: Terahertz radiation, Plasmons, Electrons, Field effect transistors, Plasma, Sensors, Millimeter wave sensors, Nondestructive evaluation, Received signal strength, Semiconductors

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Proceedings Article | 15 October 2012 Paper

Terahertz detection and emission by field-effect transistors

Wojciech Knap, Nina Dyakonova, Franz Schuster, Dominique Coquillat, Frédéric Teppe, Benoît Giffard, Dmytro But, Oleksander Golenkov, Fedor Sizov, Takayuki Watanabe, Youichi Tanimoto, Taiichi Otsuji

Proceedings Volume 8496, 84960I (2012) https://doi.org/10.1117/12.930091

KEYWORDS: Terahertz radiation, Sensors, Field effect transistors, Silicon, Transistors, Antennas, Signal detection, Terahertz detection, Plasma, Amplifiers

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Proceedings Article | 9 May 2012 Paper

Ultrahigh sensitive plasmonic terahertz detectors based on an asymmetric dual-grating gate HEMT structure

Taiichi Otsuji, Stephane Boubanga-Tombet, Takayuki Watanabe, Yudai Tanimoto, Akira Satou, Tetsuya Suemitsu, Yuye Wang, Hiroaki Minamide, Hiromasa Ito, Yahya Moubarak Meziani, Dominique Coquillat, Wojciech Knap, Denis Fateev, Viacheslav Popov

Proceedings Volume 8363, 83630P (2012) https://doi.org/10.1117/12.919978

KEYWORDS: Terahertz radiation, Field effect transistors, Sensors, Plasmons, Plasmonics, Photovoltaics, Plasma, Millimeter wave sensors, Transistors, Modulation

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Proceedings Article | 26 May 2011 Paper

Terahertz imaging with InP high-electron-mobility transistors

Takayuki Watanabe, Keisuke Akagawa, Yudai Tanimoto, Dominique Coquillat, Wojciech Knap, Taiichi Otsuji

Proceedings Volume 8023, 80230P (2011) https://doi.org/10.1117/12.887952

KEYWORDS: Terahertz radiation, Field effect transistors, Sensors, Transistors, Plasma, Millimeter wave imaging, Terahertz detection, Adhesives, Plasmons, Radiation effects

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Proceedings Article | 27 April 2010 Paper

Plasmon-resonant microchip emitters and detectors for terahertz sensing and spectroscopic applications

Taiichi Otsuji, Tsuneyoshi Komori, Takayuki Watanabe, Tetsuya Suemitsu, Dominique Coquillat, Wojciech Knap

Proceedings Volume 7671, 767102 (2010) https://doi.org/10.1117/12.850009

KEYWORDS: Terahertz radiation, Plasmons, Electrons, Sensors, Spectroscopy, Lamps, Signal detection, Semiconductors, Plasmonics, FT-IR spectroscopy

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Showing 5 of 17 publications

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