100 kHz窄线宽半导体种子源调谐及锁频特性研究  

Study of Tuning and Frequency Locking Characteristics of 100 kHz Diode Laser Seed

作　　者：高俊 池皓 齐志强 熊波涛 GAO Jun;CHI Hao;QI Zhi-qiang;XIONG Bo-tao(Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China)

机构地区：[1]华中光电技术研究所-武汉光电国家研究中心,湖北武汉430223

出　　处：《光学与光电技术》2023年第5期61-66,共6页Optics & Optoelectronic Technology

基　　金：国防基础科研计划(JCKY×××071)资助项目。

摘　　要：光栅外腔半导体激光器在冷原子精密操控等领域具有重要的应用价值。根据^(87)Rb冷原子干涉仪干涉过程的应用需求,利用光学锁相环技术,重点开展了自制体布拉格光栅100 kHz外腔种子源的调谐和拍频锁频特性实验研究。进行了电流和温度调谐实验,种子源输出激光频率的电流调谐系数和温度调谐系数分别为400 MHz/mA和16 GHz/℃;实现了自制种子源激光频率的拍频锁定,锁定后种子源的激光频率变化小于500 kHz(峰峰值,10 s),12 h功率稳定性优于0.1%(rms),可满足87Rb冷原子干涉仪各物理过程,特别是干涉过程的应用需求。Grating-coupled external cavity diode lasers play an important role in cold atoms physics research and other fields.In this paper,combined with the application requirements in the interference process of ^(87)Rb atom interferometer,the tuning and frequence-locking characteristics of a self-made compact 100 kHz external cavity diode laser seed coupled with volume Bragg grating(VBG)are chiefly studied with the optical phase locked loop.The measured coefficients of frequencycurrent and frequency-temperature are 400 MHz/mA and 16 GHz/℃,respectively.Laser frequency locking of the 100 kHz diode seed is demonstrated,and the frequency fluctuation of the locked seed is less than 500 kHz(peak to peak)within a 10 s measurement,and the power fluctuation of 12 hours is better than 0.1%(rms),which can meet the application requirements of all physical processes of the cold atoms interferometer,especially in the interference process.

关 键 词：窄线宽激光器 冷原子 外腔激光器 体布拉格光栅 拍频 

分 类 号：TN761[电子电信—电路与系统]