Intra-cavity round-trip loss measurement of all-solid-state single-frequency laser by introducing extra nonlinear loss  

作　　者：郭永瑞 卢华东 尹祺巍 苏静 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China [2]Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

出　　处：《Chinese Optics Letters》2017年第2期44-48,共5页中国光学快报（英文版）

基　　金：supported by the Key Project of the Ministry of Science and Technology of China(No. 2016YFA0301401);the National Natural Science Foundation of China (Nos. 61405107, 61227902, and 61227015)

摘　　要：A scheme for measuring the intra-cavity round-trip loss of an all-solid-state single-frequency laser by inserting a type-I noncritical phase-matching nonlinear crystal introducing nonlinear loss into the resonator is presented.The intra-cavity round-trip loss is theoretically deduced by analyzing the dependence of the fundamental-wave（FW） and second-harmonic-wave（SHW） powers on the pump factor and the nonlinear conversion factor of the single-frequency laser and experimentally measuring them by recording different FW and SHW powers, which are decided by the temperature of the nonlinear crystal. The measured intra-cavity round-trip loss and pump factor are 4.84% and 6.91% W-1, respectively. The standard deviations of the measured intra-cavity round-trip loss and the pump factor are 0.26% and 0.07%, respectively. This scheme is very suitable for measuring the intra-cavity round-trip loss of a high-gain solid-state single-frequency laser.A scheme for measuring the intra-cavity round-trip loss of an all-solid-state single-frequency laser by inserting a type-I noncritical phase-matching nonlinear crystal introducing nonlinear loss into the resonator is presented.The intra-cavity round-trip loss is theoretically deduced by analyzing the dependence of the fundamental-wave（FW） and second-harmonic-wave（SHW） powers on the pump factor and the nonlinear conversion factor of the single-frequency laser and experimentally measuring them by recording different FW and SHW powers, which are decided by the temperature of the nonlinear crystal. The measured intra-cavity round-trip loss and pump factor are 4.84% and 6.91% W-1, respectively. The standard deviations of the measured intra-cavity round-trip loss and the pump factor are 0.26% and 0.07%, respectively. This scheme is very suitable for measuring the intra-cavity round-trip loss of a high-gain solid-state single-frequency laser.

关 键 词：Phase matching 

分 类 号：TN248[电子电信—物理电子学]