突破微腔光梳转换效率瓶颈  

Break conversion efficiency limit for microcombs

作　　者：鲍成英 Bao Chengying(Department of Precision Instruments,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学精密仪器系,北京100084

出　　处：《中国科学：物理学、力学、天文学》2024年第12期227-228,共2页Scientia Sinica Physica,Mechanica & Astronomica

摘　　要：近年来基于相干泵浦的高品质因子微腔所产生的微腔光梳受到了广泛关注,并极大地推动了光梳系统小型化的进程.但进一步提升系统的集成度和降低对光梳模块的功耗要求,提升泵浦光的转换效率是一个亟待解决的问题.本文通过简化的理论模式分析了微腔光梳系统转换效率较低的原因,并提出利用二阶非线性和非线性耦合器的概念来提升转换效率,为微腔光梳的进一步集成迈出了重要一步.Optical frequency microcombs based on coherently pumped high-Q microcavities have garnered significant interestes in recent years.These microcombs can greatly miniaturize optical frequency comb systems.However,to further optimize the size,weight,and power comsumption of microcomb systems,the low conversion efficiency of microcombs has to be resolved.In the paper by Li et al.,a simplified theoretical model was established to elucidate the low efficiency issue for microcombs,and the authors also proposed to use quadratic nonlinearity as a nonlinear coupler to enhance the efficiency towards unity.The theory can be an important step to further integration of efficient microcombs.

关 键 词：光学微腔 非线性光学 光学计量 集成光学 

分 类 号：O43[机械工程—光学工程]