Affiliation:
1. University of the Chinese Academy of Sciences
2. Northeast Normal University
Abstract
Metasurface is a kind of sub-wavelength artificial electromagnetic structure, which can resonate with the electric field and magnetic field of the incident light, promote the interaction between light and matter, and has great application value and potential in the fields of sensing, imaging, and photoelectric detection. Most of the metasurface-enhanced ultraviolet detectors reported so far are metal metasurfaces, which have serious ohmic losses, and studies on the use of all-dielectric metasurface-enhanced ultraviolet detectors are rare. The multilayer structure of the diamond metasurface-gallium oxide active layer-silica insulating layer-aluminum reflective layer was theoretically designed and numerically simulated. In the case of gallium oxide thickness of 20 nm, the absorption rate of more than 95% at the working wavelength of 200-220 nm is realized, and the working wavelength can be adjusted by changing the structural parameters. The proposed structure has the characteristics of polarization insensitivity and incidence angle insensitivity. This work has great potential in the fields of ultraviolet detection, imaging, and communications.
Funder
The Science Fund for Distinguished Young Scholars of Jilin Province
Scientific and Technological Development Project of Jilin Province
National Natural Science Foundation of China
Excellent Member of Youth Innovation Promotion Association of the Chinese Academy of Sciences
Leading Talents and Team Project of Scientific and Technological Innovation for Young and Middle-aged Groups in Jilin Province
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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