摘要
为了实现对半导体激光器的注入电流和工作温度的高稳定控制,本文研究和设计了一种高稳定的半导体激光器驱动电源系统。整个系统包括恒流源驱动电路、温度控制电路、保护电路和单片机四大部分,采用了电流串联的负反馈技术和数字PID控制算法来控制半导体激光器的电流和温度,并且对系统进行了性能测试。实验结果表明,电流在1小时之内的稳定度达到了0.0123%,温度偏差低于0.0046℃,能够满足预期指标,具有较好的应用价值。
This paper developed a driver power supply for Semiconductor Laser Diode( SLD) to control the injection current and working temperature with high stability. The whole system could be divided into four parts,the drive circuit of constant current source,the temperature control circuit,the protection circuit and the microcomputer. The technologies of current series negative feedback and digital PID control algorithm were used to control the current and temperature of SLD. Furthermore,the performance of the system was tested. The experimental results showed that the stability of drive current and the deviation of temperature control in one hour were 0. 0123% and 0. 0046℃,respectively. Therefore,the expected qualification and better application value could be satisfied and obtained.
出处
《激光杂志》
北大核心
2015年第8期105-108,共4页
Laser Journal
基金
水文水深测量的控制方法的研究(1113081)
关键词
半导体激光器
驱动电源
电流控制
温度控制
电流负反馈
Semiconductor Laser Diode
Drive Power Supply
Current Control
Temperature Control
Negative feedback of current
