Journal
APPLIED OPTICS
Volume 61, Issue 5, Pages 1171-1176Publisher
Optica Publishing Group
DOI: 10.1364/AO.444667
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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.
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
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