Low Aspect Ratio Dielectric Metasurface based on Sandwich Nano-Fin
- Resource Type
- Conference
- Authors
- Hsu, Wei-Lun; Lai, Hao-Ting; Chen, Yen-Chun; Wang, Chih-Ming
- Source
- 2022 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2022 Conference on. :1-2 Jul, 2022
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Phase modulation
Lasers and electrooptics
Metasurfaces
Nonhomogeneous media
Silicon
Manufacturing
Electro-optical waveguides
- Language
We propose a sandwich nano-fin to further reduce the aspect ratio requirement of PB-phase metasurfaces. The phase modulation ability and polarization conversion efficiency (PCE) of GaN/amorphous silicon (a-Si)/GaN sandwich nano-fin were investigated. Compared with GaN nano-fin, the aspect ratio of sandwich nano-fin dropped from 6 to 4. Moreover, the PCE was up to 69.36%, which was 1.56 times higher than the GaN nano-fin under the same aspect ratio.