微腔光梳的产生、发展及应用  

Generation, development, and application of microcombs

作　　者：金星 肖莘宇 龚旗煌[1] 杨起帆[1] Jin Xing;Xiao Shen-Yu;Gong Qi-Huang;Yang Qi-Fan(State Key Laboratory for Mesoscopic Physics,School of Physics,Peking University,Beijing 100871,China)

机构地区：[1]北京大学物理学院,人工微结构与介观物理国家重点实验室,北京100871

出　　处：《物理学报》2023年第23期126-140,共15页Acta Physica Sinica

基　　金：国家重点研发计划(批准号:2021YFB2800601);北京市自然科学基金(批准号:Z210004);国家自然科学基金(92150108)资助的课题。

摘　　要：光频梳提供了光波和微波相干链接的桥梁,它的诞生革命性地提高了人们对于光学频率和时间的测量精度,深刻影响着当今世界科技的发展.最早的光频梳产生于锁模激光器系统,然而基于锁模激光器的光梳,因其系统复杂、体积庞大和价格高昂,一般仅限于实验室应用.近年来一种新型光频梳应运而生,并有望解决上述问题.它是通过连续激光耦合进入高品质光学微腔而激发的,在频域上通过四波混频产生等间距的频率分量,在时域上则利用非线性效应平衡微腔色散而形成锁模,这种新型光频梳被称为“微腔光梳”.相比于传统光梳,微腔光梳有着尺寸小、可集成、功耗低和重频范围大等优势,它的出现标志着产生光梳迈向芯片级尺寸的时代,并引起了科学界和工业界越来越多的关注.本文首先概述了微腔光梳的产生与发展历程,随后介绍微腔光梳在实际应用方面取得的进展,最后对微腔光梳当前的问题进行总结,并对未来发展进行展望.Optical frequency comb(OFC)has coherently bridged the gap between light and microwave.Its advent has brought revolutionary progress to the accurate measurements of optical frequency and time,and profoundly promoted the technological development of technology of the contemporary world.The earliest optical frequency combs are generated from mode-locked laser systems.However,optical frequency combs based on mode-locked lasers have typically been limited to laboratory applications,due to their complexity,large size,and high cost.In recent years,a new type of optical frequency comb has emerged to address these problems.It is excited by continuous-wave laser coupling into a high-quality optical microresonator,generating equidistant sidebands in the frequency domain through four-wave mixing,and achieving mode locking in the time domain by using nonlinear effects to balance dispersion.This novel optical frequency comb is named"microcombs".Compared with traditional optical frequency combs,microcombs offer advantages such as compact size,integrability,low power consumption,and a wide repetition frequency range.Their occurrence marks the era of the generation of optical frequency combs towards chip-scale size and has aroused increasing attention from the scientific and industrial communities.This paper is ended by summarizing the current challenges faced by microcombs and giving a prospective outlook on their future development.

关 键 词：光频梳 光学微腔 微腔光梳 光孤子 

分 类 号：O43[机械工程—光学工程]