多通道半导体激光器温控系统

发布时间：2018-03-24 16:11

  本文选题：激光器　切入点：半导体激光器　出处：《光学学报》2017年11期

【摘要】：研制了一种板级多通道半导体激光器温控系统,将其应用于混合气体检测中可实现同时对多个半导体激光器温度的控制.该系统硬件上由多通道温度采集模块、数字信号处理器模块、半导体制冷器(TEC)和TEC控制模块组成.软件上采用时间片轮转调度算法和积分分离式数字比例积分微分算法,实现了对多个半导体激光器温度的实时、精确控制.为了测试系统的性能,利用该系统同时控制中心波长为1.65μm和1.56μm的可调谐分布反馈激光器的温度,进行了温度控制实验并测试了两个激光器的发光光谱.实验结果表明,该系统可以实现对两个激光器温度的同时控制,温控精度为-0.011~0.015℃,响应时间小于3s.对温控系统的工作稳定性进行了测试,两个激光器连续工作6h,其工作温度保持恒定.连续10h测试两个激光器的输出光谱,输出波长的峰值未出现偏移.该温控系统体积小、成本低、便于集成且稳定可靠,在混合气体检测中有良好的应用前景.
[Abstract]:A temperature control system for multichannel semiconductor lasers at board level is developed. The temperature control of multiple semiconductor lasers can be realized simultaneously when it is applied to the detection of mixed gases. The hardware of the system is composed of a multi-channel temperature acquisition module. Digital signal processor (DSP) module, semiconductor refrigerator (TEC) and TEC control module are used in the software. Time slice rotation scheduling algorithm and integral separation digital proportional integral differential algorithm are used to realize the real-time temperature of multiple semiconductor lasers. Precise control. In order to test the performance of the system, the temperature of tunable distributed feedback lasers with central wavelengths of 1.65 渭 m and 1.56 渭 m is controlled simultaneously. The temperature control experiments were carried out and the luminescence spectra of two lasers were tested. The experimental results show that the temperature of the two lasers can be controlled simultaneously by the system. The temperature control precision is -0.011 ~ 0.015 鈩，

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