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13 December 2021 High-efficiency mid-infrared catenary metasurface for chiral spectrometer
Yaxin Zhang, Mingbo Pu, Yinghui Guo, Jinjin Jin, Qiong He, Xiong Li, Xiaoliang Ma, Ping Gao, Xiangang Luo
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Proceedings Volume 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics; 120720F (2021) https://doi.org/10.1117/12.2604314
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China
Abstract
We design a simple catenary metasurface with high efficiency, which could obtain both the degree of circular polarization and the wavelength of incident polarized light by measuring the diffraction intensity and the deflection angle. The catenary decomposes the incidence into left and right circularly polarized light and diffracts them to different predesigned directions with different deflection angles that present the wavelength information. The diffraction efficiency of the designed catenary exceeds 94%, the average diffraction efficiency is up to 97.6% at the wavelength of 8-14μm, and angular dispersion is 0.078°/nm. Moreover, the degree of circular polarization for various incident polarization states can be characterized by diffraction intensities. This work may provide extensive applications for biosensing, DNA structural analysis, stereochemistry, etc.
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Yaxin Zhang, Mingbo Pu, Yinghui Guo, Jinjin Jin, Qiong He, Xiong Li, Xiaoliang Ma, Ping Gao, and Xiangang Luo "High-efficiency mid-infrared catenary metasurface for chiral spectrometer", Proc. SPIE 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics, 120720F (13 December 2021); https://doi.org/10.1117/12.2604314
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KEYWORDS
Diffraction
Spectroscopy
Polarization
Dielectric polarization
Mid-IR
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