Doubly resonant second-harmonic generation in a fiber-based tunable open microcavity  

作　　者：孔欣航 刘卓俊 宋丽军 邱贵鑫 王栩莹 马剑涛 魏敦钊 刘进 Xinhang Kong;Zhuojun Liu;Lijun Song;Guixin Qiu;Xuying Wang;Jiantao Ma;Dunzhao Wei;Jin Liu(State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-sen University,Guangzhou 510275,China;State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China)

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-sen University,Guangzhou 510275,China [2]State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China

出　　处：《Chinese Optics Letters》2023年第11期111-117,共7页中国光学快报（英文版）

基　　金：supported by the National Key R&D Program of China(2021YFA1400803);the National Natural Science Foundation of China(No.12204019);the China Postdoctoral Science Foundation(No.2022M710233);the National PostdoctoralProgramforInnovativeTalents(No.BX20220010)。

摘　　要：Microcavities constructed from materials with a second-order nonlinear coefficient have enabled efficient second-harmonic(SH)generation at a low power level.However,it is still technically challenging to realize double resonance with large nonlinear modal overlap in a microcavity.Here,we propose a design for a robust,tunable,and easy coupling double-resonance SH generation based on the combination of a newly developed fiber-based Fabry-Perot microcavity and a sandwich structure,whose numerical SH conversion efficiency is up to 3000%W^(-1).This proposal provides a feasible way to construct ultra-efficient nonlinear devices for generation of classical and quantum light sources.

关 键 词：MICROCAVITY double resonance second-harmonic generation 

分 类 号：TN253[电子电信—物理电子学]