Design and simulation of orthogonal circularly polarized  matelens in mid-infrared band

Bijie Xu; Feng Zhao; Xiangning Chen; Haoyue Wang

doi:10.1117/12.2625935

27 March 2022 Design and simulation of orthogonal circularly polarized matelens in mid-infrared band

Bijie Xu, Feng Zhao, Xiangning Chen, Haoyue Wang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 12169AH (2022) https://doi.org/10.1117/12.2625935
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

Polarization is an important feature of electromagnetic waves, and it is another important attribute of light in addition to wavelength, amplitude, and phase. However, the current traditional polarization imaging equipment is complicated in structure, large in size, and heavy, and polarization splitting and focusing imaging require two optical components to achieve, which is difficult to integrate and miniaturize, which severely restricts the practical application of polarization imaging. The matelens can precisely control the information of the phase, amplitude, polarization and other information of the light, is compatible with the Complementary Metal Oxide Semiconductor (CMOS) manufacturing process, and has great development prospects in terms of device lightweight and mass manufacturing. Aiming at the lightweight requirements of infrared imaging lenses, this paper uses finite-difference time-domain (FDTD) software, combining geometric phase and transmission phase to design and simulate a silicon-based circularly polarized matelens with a working wavelength of 3um, The diameter is 40um, the focal length f is 10um, and the method of combining three-dimensional and remote calculation is used to reduce the simulation time and computer memory.

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Bijie Xu, Feng Zhao, Xiangning Chen, and Haoyue Wang "Design and simulation of orthogonal circularly polarized matelens in mid-infrared band", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 12169AH (27 March 2022); https://doi.org/10.1117/12.2625935

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KEYWORDS

Polarization

Transmittance

Finite-difference time-domain method

Computer simulations

Optical components

Optical imaging

Silicon

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