激光技术2025，Vol.49Issue(2)：239-244,6.DOI:10.7510/jgjs.issn.1001-3806.2025.02.013
低成本半导体激光器 2 级高稳定温控系统研制
Development of low cost two-stage high stability temperature control system for semiconductor laser
摘要
Abstract
In order to solve the problem of semiconductor laser wavelength drift leading to output wavelength deviation,a dual-loop distributed feedback(DFB)laser two-stage temperature control system was proposed.Based on the internal temperature control system of the semiconductor laser,an external environmental temperature loop control system was introduced to ensure that the laser can operate within a stable temperature range.With an embedded processor as the main controller,a digital proportional-integral-derivative control algorithm was adopted.Combined with pulse width modulation and low-cost H-bridge chips to control the heating and cooling of thermoelectric coolers(TEC),precise control of the laser two-stage temperature was achieved.Temperature stability experiments were carried out by changing the control temperature of the laser while keeping the environmental temperature constant and changing the environmental temperature while keeping the laser operating temperature constant.The results indicate that the temperature control precision of this system can reach up to±0.03℃.Wavelength stability experiments were conducted with a near-infrared DFB laser,and the results showe that the maximum wavelength error of the laser in 120 min is 0.0036 nm.Under constant current conditions,the correlation coefficient between laser output wavelength and temperature is higher than 0.9996.The temperature control system has the characteristics of high precision,low cost and compact size,and has certain application prospects in molecular spectroscopy,gas detection,fiber optics communication,and other fields.关键词
激光技术/温度控制/比例-积分-微分算法/2级系统/半导体激光器Key words
laser technique/temperature control/proportional-integral-derivative algorithm/two-stage system/semiconductor lasers分类
信息技术与安全科学引用本文复制引用
孙磊,宫廷,郭古青,田亚莉,孙小聪,周月婷,邱选兵,李传亮..低成本半导体激光器 2 级高稳定温控系统研制[J].激光技术,2025,49(2):239-244,6.基金项目
国家重点研发计划资助项目(2023YFF0718100) （2023YFF0718100）
国家自然科学基金资助项目(52076145 （）
12304403) （）
山西省科技创新人才团队专项基金资助项目(202304051001034) （202304051001034）
山西省留学人员科技活动项目(20230031) （20230031）
山西省省筹资金资助回国留学人员科研资助项目(2023-151) （2023-151）
