北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (12): 2391-2396.doi: 10.13700/j.bh.1001-5965.2015.0001

• 论文 • 上一篇    

基于PD的半导体激光器温度控制系统设计方法

陈熙1,2, 全伟1,2   

  1. 1. 北京航空航天大学 “惯性技术”重点实验室, 北京 100191;
    2. 北京航空航天大学 “新型惯性仪表与导航系统技术”国防重点学科实验室, 北京 100191
  • 收稿日期:2015-01-04 修回日期:2015-04-03 出版日期:2015-12-20 发布日期:2016-01-04
  • 通讯作者: 全伟(1977-),男,山东临沂人,副教授,quanwei@buaa.edu.cn,主要研究方向为量子科学仪器. E-mail:quanwei@buaa.edu.cn
  • 作者简介:陈熙(1990-),女,山东济宁人,硕士研究生,chenxi.cug@gmail.com
  • 基金资助:
    国家自然科学基金(61374210,61227902);中央高校基本科研业务费专项资金(30371001)

Design method of a PD-based temperature control system for laser diode

CHEN Xi1,2, QUAN Wei1,2   

  1. 1. Science and Technology on Initial Laboratory, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
    2. Fundamental Science on Novel Instrument & Navigation System Technology Laboratory, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2015-01-04 Revised:2015-04-03 Online:2015-12-20 Published:2016-01-04

摘要: 半导体激光器常用于抽运与检测激光光源用于原子物理实验与量子科学仪器的研究,而半导体激光器的各特性参数,如阈值电流、峰值波长、输出功率、使用寿命等,均与温度相关,因此对其进行温度控制很重要.根据激光器输出功率与温度之间的关系,提出一种基于光电二极管(PD)的激光器温度控制系统,通过激光管内部集成的PD所获得的激光器光功率,进而得出激光器发光芯片温度,与热敏电阻相结合,以半导体制冷芯片为执行器,构成双闭环控制系统,可实现高精度长期稳定激光器温度控制,稳定度优于±5 mK,能够满足原子物理实验与研究对半导体激光器的要求.

关键词: 半导体激光器, 原子物理, 温度控制, 光电二极管(PD), 长期稳定性

Abstract: Semiconductor lasers are widely used as pump and probe laser light source in atomic physics and quantum science equipment researches. The characteristics of the laser diodes, such as threshold current, wavelength, output power, lifetime, are temperature dependent, therefore it is vitally important to control the temperature of semiconductor lasers. Based on the relation between laser temperature and the output power, a photodiode (PD) based laser temperature control system was proposed. The light power of lasers can be acquired by the monitor photodiode in the laser package and then the laser junction temperature can be obtained by the relation between the power and the temperature. A double close loop control system was designed using the photodiode integrated with the temperature sensor and the thermoelectric coolers as the actuator. The test result indicates that the long-term stability of the photodiode-baserd laser diode temperature control system can realize better than ±5 mK and meet the requirement of semiconductor lasers for the experiment and study of atomic physics.

Key words: semiconductor laser, atomic physics, temperature control, photodiode (PD), long-term stability

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