Open AccessOptical control of terahertz plasmon-induced transparency based on hybrid CsPbBr3 quantum dot metasurfaces
Author(s) -
Yang Yue,
Jining Li,
Jin Huang,
Qingyan Li,
Yating Zhang,
Haitao Dai,
Jianquan Yao
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.399822
Subject(s) - terahertz radiation , plasmon , electromagnetically induced transparency , metamaterial , optoelectronics , quantum dot , transparency (behavior) , optics , materials science , phase modulation , terahertz spectroscopy and technology , physics , computer science , computer security , phase noise
Incorporating photosensitive material into structured metamaterials explores opportunities for dynamical operation across the terahertz functional devices, enabled by the efficient interaction between light and matter. In this work, the CsPbBr 3 quantum dots are incorporated into the metasurfaces, realizing the active control of the plasmon-induced transparency. In the experiment, the normalized modulation depth of transparency effect is up to 74%. Rigorous numerical and theoretical simulations verify that the variation of dynamic physical process is associated with the charge storage capacity in the capacitive metasurface. An observed phase advance and group delay indicate the hybrid metasurface is useful for slow light application. In addition, the simple process provides a convenient way for the development of terahertz functional devices.