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- Title
Polarization-Dependent Absorption and Transmission Metasurfaces for Linearly and Circularly Polarized Light in Terahertz Band.
- Authors
Yang, Bowei; Ouyang, Mingzhao; Ren, Hang; Wu, Jinshuang; Zhang, Yixin; Fu, Yuegang
- Abstract
Polarization detection is an important part of many polarization applications such as polarization imaging, wireless communication, and circular dichroism spectroscopy. In this paper, two polarization-dependent terahertz wave absorption and transmission metasurface for linearly and circularly polarized light are proposed and proved by numerical simulations. Polarization filtering and polarization absorption are integrated on a single cell, and the orthogonal polarization component is transmitted and absorbed, respectively. The linearly polarization-dependent transmission and absorption structure can obtain a transmission extinction ratio of 11.5 dB and an absorption extinction ratio of over 270 dB at 3 THz. Moreover, the circularly polarization-dependent structure can obtain a transmission extinction ratio of 8.1 dB and an absorption extinction ratio of 4.66 dB at 2.8 THz. Our design facilitates the acquisition of full Stokes parameters and the high-resolution imaging.
- Subjects
OPTICAL polarizers; SUBMILLIMETER waves; STOKES parameters; ABSORPTION; WIRELESS communications; CIRCULAR dichroism
- Publication
Photonics, 2023, Vol 10, Issue 2, p100
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics10020100