1.57μm半导体激光器长期频率稳定性研究  

Long term frequency stability study of 1.57μm semiconductor laser

作　　者：杜娟 孙延光[2] DU Juan;SUN Yanguang(Department of Electronic Information and Electrical Engineering,Huizhou University,Huizhou 516007,China;Key Laboratory of Space Laser Communication and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]惠州学院电子信息与电气工程学院,广东惠州516007 [2]中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室,上海201800

出　　处：《光学技术》2021年第3期299-304,共6页Optical Technique

基　　金：广东省自然科学基金(2017A030310665)。

摘　　要：为满足星载二氧化碳激光雷达对种子光源频率长期稳定的需求,基于自由空间体吸收池结合频率调制光谱技术的方法建立了激光稳频理论模型,通过仿真优化系统设计参数搭建了一套稳频激光器,研究了体吸收池引入的多光束干涉噪声,通过调整调制频率为吸收池干涉条纹自由光谱范围整数倍的方法抑制了干涉噪声的影响,实现了激光器频率抖动峰峰值约为150kHz,长期频率稳定度在10000s时低于1×10^(-11),满足了星载激光雷达的应用需求。In order to meet the need of the spaceborne CO2 lidar for the frequency stability of the seed light source, a set of frequency-stabilized laser was built based on the free-space body absorption cell combined with the frequency modulation spectroscopy technology.A set of frequency stabilization lasers were built through simulation and optimization of system design parameters. Studied the multi-beam interference noise was introduced by the volume absorption cell. By adjusting the modulation frequency to an integer multiple of the free spectral range of the interference fringe of the absorption cell, the influence of interference noise was suppressed, and the peak-to-peak value of the laser frequency jitter was about 150 kHz, and the long-term frequency stability is lower than 1×10-11 at 10000 s, which meets the application requirements of spaceborne lidar.

关 键 词：自由光谱范围 吸收池 多光束干涉 干涉条纹 半导体激光器 频率调制光谱 频率稳定性 稳频激光器 

分 类 号：O436[机械工程—光学工程]