Ultra-broadband generalized M/I/M absorber for visible-near infrared band

Yu-jie Qiao; Xue-hua Lu; Wen-bin Li; Ya-rong Su; Ling Li; Zheng-wei Xie; Ming-jun Tang

doi:10.1117/12.2584949

4 December 2020 Ultra-broadband generalized M/I/M absorber for visible-near infrared band

Yu-jie Qiao, Xue-hua Lu, Wen-bin Li, Ya-rong Su, Ling Li, Zheng-wei Xie, Ming-jun Tang

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 116170Y (2020) https://doi.org/10.1117/12.2584949
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

A metamaterial perfect absorber for visible-near infrared broadband was proposed. The structure consists of four layers including reflective metal Ti layer, dielectric SiO2 layer, thin Ti layer, and the top single-sized Ti cylinder, which is named the generalized M/I/M absorber. We numerically studied the absorptivity of the absorber and achieved nearly perfect absorption via optimizing the structural parameters. Our Theoretical results show that (1) the maximum absorptivity in the high absorption window is as high as 99.96% over the wavelength range from 350~1400nm and the average absorptivity across the broadband was 98.21%. (2) this structure is insensitive to the incident angle of electromagnetic wave. We hope that such a device could be applied in solar energy absorption, thermal electronic equipment and perfect cloaking.

Citation Download Citation

Yu-jie Qiao, Xue-hua Lu, Wen-bin Li, Ya-rong Su, Ling Li, Zheng-wei Xie, and Ming-jun Tang "Ultra-broadband generalized M/I/M absorber for visible-near infrared band", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 116170Y (4 December 2020); https://doi.org/10.1117/12.2584949

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