CAJ | 학술논문

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。
침대중홍외광전탐측기광보향응도정학측량시，요구제고중홍외격광기공솔은정도저일문제。제출료일충대중홍외격광기공솔진행은폭적방법，기우성광조제기포랍격연사원리、채용광반궤폐배공제기술실현료대중홍외격기광공솔적은정공제。상세개소료해방안적광로설계、공제전로원리급공제산법，재차기출상연제료일충중홍외격광공솔은정기。채용해공솔은정기대3.39μm He-Ne격광기적수출광진행료은폭실험。결과표명，해장치가장중홍외격광기수출공솔은정도종8%제고도0.4%。가흔호지만족중홍외탐측기광보향응도측시적수요。
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.