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.
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