Raman lasing and other nonlinear effects based on ultrahigh-Q CaF_(2)optical resonator  

作　　者：Tong Xing Enbo Xing Tao Jia Jianglong Li Jiamin Rong Yanru Zhou Wenyao Liu Jun Tang Jun Liu 邢彤;邢恩博;贾涛;李江龙;戎佳敏;周彦汝;刘文耀;唐军;刘俊(Key Laboratory of Electronic Testing Technology,School of Instrument and Electronics,North University of China,Taiyuan 030051,China)

机构地区：[1]Key Laboratory of Electronic Testing Technology,School of Instrument and Electronics,North University of China,Taiyuan 030051,China

出　　处：《Chinese Physics B》2022年第10期423-428,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.51727808,51922009,52005457,and 62004179);the Fund from the Key Laboratory of Quantum Sensing and Precision Measurement of Shanxi Province,China(Grant No.201905D121001)。

摘　　要：The calcium fluoride(CaF_(2))whispering gallery mode crystalline resonator is an excellent platform for nonlinear optical applications because of the decreasing in threshold caused by ultrahigh quality(Q)factor.In this paper,we achieved the observation of Raman lasing,first-order Raman comb,and second-order Raman lasing in a CaF_(2)disk resonator with a diameter of 4.96 mm and an ultrahigh-Q of 8.43×10^(8)at 1550-nm wavelength.We also observed thermal effects in CaF_(2)disk resonator,and the threshold of thermo-optical oscillation is approximately coincident with Raman lasing,since the intracavity power increases rapidly when the power reaches the threshold,and higher input pump power results in longer thermal drift and higher Raman emission power.With a further increase in pump power,the optical frequency combs range is from 1520 nm to 1650 nm,with a wavelength interval of 4×FSR.It is a promising candidate for optical communication,biological environment monitoring,spectral analysis,and microwave signal sources.

关 键 词：whispering gallery mode crystalline resonator Raman lasing nonlinear effects thermo-optical oscillation optical frequency combs 

分 类 号：TQ132.32[化学工程—无机化工]