材料科学
光学
紫外线
光电子学
电介质
波长
电场
探测器
极化(电化学)
钻石
光电效应
欧姆接触
图层(电子)
物理
纳米技术
复合材料
化学
物理化学
量子力学
作者
Jiajing Feng,Yong‐Min Liang,Xiaoyan Shi,Xiqing Zhang,Dejia Meng,Rui Dai,Shoutao Zhang,Yan Jia,Ningte Yan,Sixuan Li,Zihan Wang
出处
期刊:Optics Express
[The Optical Society]
日期:2023-04-12
卷期号:31 (10): 15836-15836
被引量:5
摘要
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.
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