Broadband and reconfigurable multilayer absorber based on phase-change material in THz regime

Hao Peng; Zhi Chen; Zhenxin Huang

doi:10.1117/12.2621240

27 March 2022 Broadband and reconfigurable multilayer absorber based on phase-change material in THz regime

Hao Peng, Zhi Chen, Zhenxin Huang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 1216915 (2022) https://doi.org/10.1117/12.2621240
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

A broadband and reconfigurable multilayer absorber is demonstrated in terahertz regime by using the VO₂ phase-change material. During the VO₂’s insulator-metal transition (IMT), the wide absorption band in 4.5-10THz is dramatically decreased from averaged 95.5% to 0.01%. Moreover, this high absorption band shows a good polarization insensitive property. Our proposed device exhibits the merits of wideband reconfigure absorbance in terahertz, and the absorber can be easily fabricated without involving any lithography process. Comparaed with metamaterials wideband tunbale absorbers, our proposed structure have more advantages in practical applications, such as sensing, modulating and imaging technology.

Citation Download Citation

Hao Peng, Zhi Chen, and Zhenxin Huang "Broadband and reconfigurable multilayer absorber based on phase-change material in THz regime", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 1216915 (27 March 2022); https://doi.org/10.1117/12.2621240

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