Terahertz circularly polarized detection structures based on metasurfaces with high transmittance and extinction ratio

Bowei Yang; Mingzhao Ouyang; Hang Ren; Ziqiang Zhang; Yuegang Fu

doi:10.1117/12.2655033

9 January 2023 Terahertz circularly polarized detection structures based on metasurfaces with high transmittance and extinction ratio

Bowei Yang, Mingzhao Ouyang, Hang Ren, Ziqiang Zhang, Yuegang Fu

Author Affiliations +

Proceedings Volume 12507, Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022); 125070T (2023) https://doi.org/10.1117/12.2655033
Event: 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022), 2022, Changchun, China

Abstract

Circularly polarized light is widely used in wireless communications, polarized imaging and circular dichroism spectroscopy. The existing miniature circular polarization detection structure cannot guarantee high transmission efficiency and extinction ratio at the same time. In this paper, we propose a terahertz circularly polarized detection metasurface based on dielectric materials. The proposed structure can well distinguish the handedness of circularly polarized light. At 2.3Thz, the transmission efficiency is greater than 95% and the extinction ratio is greater than 250dB. I believe our design could facilitate the development of devices such as small biomedical imaging.

Citation Download Citation

Bowei Yang, Mingzhao Ouyang, Hang Ren, Ziqiang Zhang, and Yuegang Fu "Terahertz circularly polarized detection structures based on metasurfaces with high transmittance and extinction ratio", Proc. SPIE 12507, Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022), 125070T (9 January 2023); https://doi.org/10.1117/12.2655033

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