光子学报, 2019, 48 (6): 0614001, 网络出版: 2019-07-10
掺钕晶体双频微片激光器的频差温度特性研究
Temperature Characteristics of Frequency Separation in Nd-doped Dual-frequency Microchip Laser
双频微片激光器(DFML) 频差调谐 温度控制 光学谐振腔 掺钕激光晶体 Dual-Frequency Microchip Laser (DFML) Frequency separation tuning Temperature control Optical cavity Nd3+ doped laser crystal
摘要
对不同参数的掺钕晶体双频微片激光器(DFML)进行频差温度特性研究.探索了在不同腔长、不同种类掺钕介质的DFML中, 晶体温控温度对双频信号频差的影响.结果表明, 双频信号频差与谐振腔光学腔长成反比, 与晶体温控温度呈正相关; 其中0.5 mm腔长DFML(Nd∶YVO4)的双频信号频差随晶体温控温度的变化率为0.34 GHz/℃, 0.8 mm腔长DFML(Nd∶YVO4)的双频信号频差随晶体温控温度的变化率为0.12 GHz/℃, 1 mm腔长DFML(Nd∶YVO4)的双频信号频差随晶体温控温度的变化率为0.044 GHz/℃; 即腔长越短, 晶体温控温度对频差的影响越大.不同材料Nd∶YVO4和Nd∶GdVO4晶体1 mm腔长的DFML双频信号频差随晶体温度的变化率相近,仿真与实验结果符合较好.
Abstract
The frequency separation temperature characteristics of Nd-doped Dual-frequency Microchip Lasers (DFMLs) were studied. The frequency separation versus the crystal temperature of DFML with different cavity lengths and different kinds of gain medium are experimented. The experimental results show that, the frequency separation is inversely proportional to the cavity length, and positively related to the crystal temperature. The frequency separation change rates with crystal temperatures of 0.5 mm, 0.8 mm and 1 mm DFML (Nd∶YVO4) are 0.34 GHz/℃, 0.12 GHz/℃ and 0.04 GHz/℃, the shorter the cavity length is, the greater frequency separation change with the crystal temperature is. The frequency separation change rate with crystal temperature of 1 mm DFML (Nd∶YVO4) and (Nd∶GdVO4) is nearly same, the simulation agrees with the experimental results well.
邹宇玲, 胡淼, 李鹏, 欧军, 周雪芳, 杨国伟, 卢旸, 毕美华. 掺钕晶体双频微片激光器的频差温度特性研究[J]. 光子学报, 2019, 48(6): 0614001. ZOU Yu-ling, HU Miao, LI Peng, OU Jun, ZHOU Xue-fang, YANG Guo-wei, LU Yang, BI Mei-hua. Temperature Characteristics of Frequency Separation in Nd-doped Dual-frequency Microchip Laser[J]. ACTA PHOTONICA SINICA, 2019, 48(6): 0614001.