基于超高Q值氟化钙晶体微腔的非线性散射效应研究  

Nonlinear Scattering Effect Based on Ultrahigh-Q Factor CaF2 Crystal Microcavity

作　　者：匡全进 谢成峰 王梦宇 谭庆贵[3] 郭状 吴凌峰 张海林[1,2] 魏斌 张磊 何兴道 Kuang Quanjin;Xie Chengfeng;Wang Mengyu;Tan Qinggui;Guo Zhuang;Wu Lingfeng;Zhang Hailin;Wei Bin;Zhang Lei;He Xingdao(Key Laboratory of Optoelectronic Information Science and Technology of Jiangxi Province,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;Key Laboratory of Nondestructive Test,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;China Academy of Space Technology(Xi'an),Xi'an 710000,Shaanxi,China;Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,Anhui,China)

机构地区：[1]南昌航空大学江西省光电信息科学与技术重点实验室,江西南昌330063 [2]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063 [3]中国空间技术研究院西安分院,陕西西安710000 [4]中国科学技术大学精密机械与精密仪器系,安徽合肥230026

出　　处：《光学学报》2023年第16期320-328,共9页Acta Optica Sinica

基　　金：国家自然科学基金(62101230,51865040,12205136);江西省自然科学基金(20224BAB202006);重点实验室基金2021-JCJQ-LB-006(6142411512108);江西省教育厅基金(GJJ200915)。

摘　　要：受激布里渊散射、受激拉曼散射和克尔效应等非线性光学效应一直以来得到广泛研究。回音壁模式光学微腔具有超高品质因子和极小模式体积,日益成为了非线性光学相关研究的重要平台之一。使用超精密加工技术制备了氟化钙晶体微腔,品质因子Q值达3.6×10^(8)。搭建了基于光学微腔的非线性光学的实验平台,在连续波泵浦的条件下激发了氟化钙晶体微腔中的受激布里渊散射、受激拉曼散射和克尔效应。实验中记录了级联布里渊、布里渊耦合四波混频、拉曼辅助克尔、超宽拉曼光频梳等丰富的非线性光学散射效应。结果表明超精密加工得到的氟化钙晶体微腔在非线性光学中有着优异的表现,是研究非线性光学的理想平台。Objective The whispering-gallery mode(WGM)optical microresonator facilitates the continuous propagation of light waves with minimal loss,owing to total internal reflection.This characteristic can considerably enhance the interaction between light and matter,increase the efficiency of nonlinear effects,and remarkably reduce the threshold for nonlinear effects.Various microresonator-based nonlinear optical effects,such as stimulated Raman scattering,stimulated Brillouin scattering,and four-wave mixing,have been extensively researched.Studies of microresonator-based nonlinear optics have been applied in several research avenues,including optical switches,nonlinear optical devices,and precision measurement.Indeed,the study of nonlinear optics in WGM optical microresonators is of considerable importance.Crystalline optical microresonators offer unique benefits over silica-based WGM optical microresonators.One major example is the calcium fluoride(CaF2)crystalline microresonator,which has emerged as an ideal platform for studying nonlinear optics due to its high nonlinear coefficient,low absorption coefficient,and suitability for long-term storage after processing.Researching the nonlinear effects based on CaF2 crystalline microresonators entails excellent prerequisites.However,in the current scientific landscape,research into CaF2 crystalline microresonators has not been extensively pursued.Additionally,the study of CaF2 crystalline microresonator-based nonlinear optics is not widespread.In light of the above discussion,this study aims to further explore the potential of CaF2 crystalline optical microresonators,particularly in the research of stimulated Brillouin scattering,stimulated Raman scattering,and other nonlinear effects in microresonators.Additionally,it aims to provide a preliminary foundation for subsequent nonlinear applications in CaF2 crystalline microresonators.Methods The fabrication of CaF2 crystalline microresonators with an ultrahigh quality factor up to 3.6×108 was achieved using an ultraprecision

关 键 词：光学微腔 氟化钙晶体 非线性光学 受激布里渊散射 光频梳 

分 类 号：O436[机械工程—光学工程]