中红外激光器功率稳定器技术  

Mid infrared laser power stabilizer

作　　者：孙权社[1] 陈坤峰[1] 史学舜[1] 

机构地区：[1]中国电子科技集团公司第四十一研究所,山东青岛266555

出　　处：《红外与激光工程》2015年第7期2127-2131,共5页Infrared and Laser Engineering

基　　金：国防技术基础科研项目(J312013A001)

摘　　要：针对中红外光电探测器光谱响应度精确测量时,要求提高中红外激光器功率稳定度这一问题。提出了一种对中红外激光器功率进行稳幅的方法,基于声光调制器布拉格衍射原理、采用光反馈闭环控制技术实现了对中红外激器光功率的稳定控制。详细介绍了该方案的光路设计、控制电路原理及控制算法,在此基础上研制了一种中红外激光功率稳定器。采用该功率稳定器对3.39μm He-Ne激光器的输出光进行了稳幅实验。结果表明,该装置可将中红外激光器输出功率稳定度从8%提高到0.4%。可很好地满足中红外探测器光谱响应度测试的需要。In order to accurately measure spectral response rate of mid infrared photoelectric detectors, the power stability of mid infrared laser must be improved. A novel method of stabilizing laser power was proposed using the technique of light feedback based on Bragg diffraction principle of the acousto-optic modulator in this paper. The optical path design, control electrocircuit and arithmetic were discussed particularly, on this basis, a mid infrared laser power stabilizers was fabricated. Using this power stabilizers, the power stability of He-Ne laser at a wavelength of 3.39 μm was compared. The experimental result shows that this method can improve the power stability of the infrared laser from 8%to 0.4%, and meet spectral responsivity of the infrared detector parameters.

关 键 词：激光功率稳定器 光谱响应度 中红外激光器 声光调制器 布拉格衍射 红外探测器 

分 类 号：TN216[电子电信—物理电子学]