Terahertz Switch Utilizing Inorganic Perovskite-Embedded Metasurface

Ri-Hui Xiong, Xiao-Qing Peng, Jiu-Sheng Li
2020 Frontiers in Physics  
Various applications of terahertz technology require a large number of various terahertz wave control devices. Yet, high efficient and rapid-response terahertz switch is still a great challenge. Here, we introduce a new scheme, based on inorganic perovskite quantum dot (CsPbBr 3 -QD)-embedded metasurface under different pump laser powers that realize terahertz wave high-speed switching performance. The off-on speed of the presented device achieves 8 MHz. This kind of components provides a new
more » ... ts provides a new idea and a cost-effective functional solution for manipulating the terahertz waves in emerging terahertz devices and systems.
doi:10.3389/fphy.2020.00141 fatcat:mvutcu4ribe2vcu4eiscbbfi5u