Efficient THz modulation at ultra-low optical power
These metasurface devices integrate perovskite or graphene with metal metasurfaces, enabling highly sensitive and efficient modulation of terahertz waves at extremely low external optical power, far below conventional requirements.
Wang, Tongling · Li, Tengteng · Yang, Zhou · Yao, Haiyun · Lu, Yuying · Yan, Xin · Cao, Maoyong · Liang, Lanju · Yang, Maosheng · Wenjing, Zheng · Wu, Xiaohu · Yao, Jianquan
Journal of Lightwave Technology 2023
Metal-perovskite hybrid meta-device achieves a maximum THz transmission amplitude modulation depth of 237.5% at a power density as low as 13.7483 mW/cm²
Metal-graphene hybrid meta-device achieves a maximum modulation depth of 403.36% at an extremely low power density of 11.1846 mW/cm²