J4 ›› 2010, Vol. 27 ›› Issue (2): 151-154.

• 激光技术与器件 • 上一篇    下一篇

一种双极性高精度半导体激光器温度控制系统

黄杰 徐贲 沈为民   

  1. 中国计量学院光学与电子科技学院,浙江 杭州 310018
  • 出版日期:2010-03-28 发布日期:2010-03-05
  • 通讯作者: 沈为民(1961-),男,浙江桐庐人,教授. 主要研究方向为光学与光电子技术,激光应用等. E-mail:swm@cjlu.edu.cn
  • 作者简介:黄杰(1984-),男,湖北荆州人,硕士研究生,主要研究方向为半导体激光器及其应用等。Email:hwangjie1984@yahoo.com.cn
  • 基金资助:

    浙江省教育厅自然科学D类项目(20050371)

A bipolar temperature controller with high precision for laser diode

 HUANG Jie, XU Ben, SHEN Wei-Min   

  1. College of Optical & Electronic Science and Technology, China Jiliang University, Hangzhou, Zhejiang 310018, China
  • Published:2010-03-28 Online:2010-03-05

摘要:

温度是影响半导体激光器(LD)寿命和输出特性的重要因素之一。为保证LD输出稳定的激光模式和功率,采用以ADC和DAC集成的微处理器芯片C8051F350和具有双极性输出电流的TEC驱动芯片MAX1968为控制核心,以积分分离和变速积分增量式相结合的数字PID算法为运算程序的自动温度控制系统(ATC)控制TEC驱动电流的方向和大小,实现对LD的加热或制冷,使其工作在恒定温度。实验证明,应用该系统,LD在0℃~40℃环境温度范围内能很快稳定在设定温度,且其不确定度为±0.03℃。

关键词: 激光技术, 半导体激光器, 温度控制, PID

Abstract:

The temperature is important for the properties of laser diode (LD). For increasing lifetime of LD and obtaining steady laser output, applying the automatic temperature control system to control the current of The Thermo Electric Cooler (TEC). The temperature control system consisting of C8051F350 which integrated with ADC and DAC and MAX1968 which can output two-way current. It uses the enhanced digital PID algorithm combining integral separating and shift integration incremental algorithm to achieve the two-way control of the temperature of LD. The result shows that the temperature of laser can reach the value preset rapidly and stably with stability ±0.03oC while LD working in range from 0℃ to 40℃.

Key words: laser techniques, laser diode, temperature control, PID