用于SERF陀螺仪的半导体激光器自动稳频技术  

Research on Automatic Frequency Stabilization Technology of Diode Laser for SERF Gyroscope

作　　者：庄铭今 王天顺 张文静[2] 黄伟 秦德鑫 刘院省[1,2] ZHUANG Ming-jin;WANG Tian-shun;ZHANG Wen-jing;HUANG Wei;QIN De-xin;LIU Yuan-xing(Quantum Engineering Researeh Center of CASC,Beijing 100094;Beijing Institute of Aerospace Control Devices,Beijing 100039)

机构地区：[1]中国航天科技集团有限公司量子工程研究中心,北京100094 [2]北京航天控制仪器研究所,北京100039

出　　处：《导航与控制》2022年第2期76-82,共7页Navigation and Control

基　　金：国家重点研发计划(编号:2016YFB0501601);国家自然科学基金(编号:61601017)。

摘　　要：半导体激光器自动稳频技术广泛应用于光纤传感、激光雷达和量子精密测量等领域,针对无自旋交换弛豫(Spin Exchange Relaxation Free, SERF)陀螺仪对激光频率长期稳定性的需求,采用了激光饱和吸收稳频技术,并提出了激光频率快速自动回锁方法,研制了用于分布式布拉格反射(Distributed Bragg Reflector, DBR)激光器频率稳定控制系统。实验结果表明:激光频率1h的漂移量为308kHz,平均采样时间128s时的Allan方差达到8.133×10^(-11),激光频率失锁后可在0.5s内自动回锁,激光频率能够长期保持锁定状态,为SERF陀螺仪的长期稳定运行奠定了基础。Diode laser automatic frequency stabilization technology is widely used in optical fiber sensing, lidar and quantum precision measurement. According to the demand of spin exchange relaxation free(SERF) gyroscope for long-term stability of laser frequency, the laser saturation absorption frequency stabilization technology is adopted in this paper, and a fast automatic locking method of laser frequency has been proposed to bulid a distributed Bragg reflector(DBR) laser frequency stability control system. The experiment results show that the drift of the laser frequency in one hour is 308 kHz, the Allan variance reaches 8.133×10^(-11) when the average sampling time is 128 s. After the laser frequency is unlocked, it can be automatically locked back within 0.5 s. Laser frequency could be locked for a long time, which lays a foundation for the long-term stable operation of SERF gyroscope.

关 键 词：半导体激光器 原子陀螺仪 饱和吸收稳频 自动稳频 

分 类 号：TN248.4[电子电信—物理电子学]