Dynamically tunable perfect absorber based on VO_2-Au hybrid nanodisc array

Mengdi Zou; Yi Li; Wenqing ZhaoXin ZhangYuda WuChuang PengLina FanJunxian LiJunyi YanJiaqing ZhuangJincheng MeiXinping Wang

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Dynamically tunable perfect absorber based on VO_2-Au hybrid nanodisc array

机译：Dynamically tunable perfect absorber based on VO_2-Au hybrid nanodisc array

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摘要

The nanoscale modulation of light can be achieved by integrating plasmonic nanostructures with phase change materials. A dynamic and tunable perfect absorber is designed by combining VO_2-Au hybrid nanodisc array with metal-insulator-metal structure. The finite-difference time-domain method is used to simulate the absorption curves under different structural parameters and temperatures. In the near-infrared band of 700 to 1800 nm, the average absorption rate and absorption bandwidth of the absorber in the insulating phase of VO_2 are 87.6 and 939 nm, respectively. And the maximum absorption modulation depth before and after phase transition of VO_2 reaches 63.8. The absorber can tolerate a wide range of incident angles and exhibits polarization-independent features. We envisage that the overall advantages of this absorber will open new opportunities for optical modulation and optoelectronics.

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来源
《Optical Engineering》 |2021年第8期|087103-1-087103-11|共11页
作者
Mengdi Zou; Yi Li; Wenqing ZhaoXin ZhangYuda WuChuang PengLina FanJunxian LiJunyi YanJiaqing ZhuangJincheng MeiXinping Wang;
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作者单位

University of Shanghai for Science and Technology, School of Optical-Electrical and Computer Engineering, Shanghai, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
phase change material; vanadium dioxide; perfect absorption; subwavelength structure; plasmonics;

Dynamically tunable perfect absorber based on VO_2-Au hybrid nanodisc array

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