High-efficiency optical frequency mixing in an all-dielectric metasurface enabled by multiple bound states in the continuum

作     者：Liu, Tingting Qin, Meibao Wu, Feng Xiao, Shuyuan 

作者机构：Institute of Photonic Chips University of Shanghai for Science and Technology Shanghai200093 China Centre for Artificial-Intelligence Nanophotonics School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai200093 China School of Physics and Materials Science Nanchang University Nanchang330031 China School of Optoelectronic Engineering Guangdong Polytechnic Normal University Guangzhou510665 China Institute for Advanced Study Nanchang University Nanchang330031 China Jiangxi Key Laboratory for Microscale Interdisciplinary Study Nanchang University Nanchang330031 China 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2022年

核心收录：

主　　题：Four wave mixing 

摘      要：We present nonlinear optical four-wave mixing in a silicon nanodisk dimer metasurface. Under the oblique incident plane waves, the designed metasurface exhibits a multi-resonant feature with simultaneous excitations of three quasi-bound states in the continuum (BIC). Through employing these quasi-BICs with maximizing electric field energy at the input bump wavelengths, significant enhancement of third-order nonlinear processes including third-harmonic generation, degenerate and non-degenerate four-wave mixing are demonstrated, giving rise to ten new frequencies in the visible wavelengths. This work may lead to a new frontier of ultracompact optical mixer for applications in optical circuitry, ultrasensitive sensing, and quantum nanophotonics. Copyright © 2022, The Authors. All rights reserved.