Active terahertz modulator based on optically controlled organometal halide perovskite MAPbI2Br

In this paper, an active terahertz modulator based on optically controlled organometal halide perovskite MAPbI(2)Br is proposed. The terahertz wave time-domain transmission of the MAPbI(2)Br/Al2O3 sample was measured by a terahertz time-domain spectrometer. Experimental results indicate that the MAPbI(2)Br/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. (C) 2022 Optica Publishing Group

Automated summary

An active terahertz modulator based on optically controlled organometal halide perovskite MAPbI(2)Br is proposed in this paper. Experimental results demonstrate that the modulator exhibits obvious optical-power-dependent modulation effect on transmission of terahertz waves.