Active terahertz modulator based on optically controlled organometal halide perovskite MAPbI2Br

Huaixing Wang; Furi Ling; Chunya Luo; Dan Li; Yongrui Xiao; Zeyuan Chang; Zhibo Xu; Ying Zeng; Weijun Wang; Jianquan Yao

doi:10.1364/AO.444667

Active terahertz modulator based on optically controlled organometal halide perovskite MAPbI₂Br

Appl Opt. 2022 Feb 10;61(5):1171-1176. doi: 10.1364/AO.444667.

Authors

Huaixing Wang, Furi Ling, Chunya Luo, Dan Li, Yongrui Xiao, Zeyuan Chang, Zhibo Xu, Ying Zeng, Weijun Wang, Jianquan Yao

PMID: 35201169
DOI: 10.1364/AO.444667

Abstract

In this paper, an active terahertz modulator based on optically controlled organometal halide perovskite MAPbI₂Br is proposed. The terahertz wave time-domain transmission of the MAPbI₂Br/Al₂O₃ sample was measured by a terahertz time-domain spectrometer. Experimental results indicate that the MAPbI₂Br/Al₂O₃ sample showed an obvious optical-power-dependent modulation effect on transmission of the terahertz wave; the maximum modulation depth of the modulator can reach 59.99% at 0.3 THz when the external pump optical power is up to 1500 mW.