CAJ | 학술논문

设计一种半导体激光器的稳恒功率控制系统.该系统以3个高精度放大器OPA114,OPA602和OPA335为核心,采用滤波和慢启动电路,具有集成度高、元件少、性能稳定等优点;采用光功率负反馈控制,能为半导体激光器提供高稳定的、连续可调的驱动电流.实验结果表明,在该系统的驱动下,半导体激光器连续工作5 h,光功率稳定度可达0.048%,比开环时的稳定度提高了近5.5倍,达到设计要求.
설계일충반도체격광기적은항공솔공제계통.해계통이3개고정도방대기OPA114,OPA602화OPA335위핵심,채용려파화만계동전로,구유집성도고、원건소、성능은정등우점;채용광공솔부반궤공제,능위반도체격광기제공고은정적、련속가조적구동전류.실험결과표명,재해계통적구동하,반도체격광기련속공작5 h,광공솔은정도가체0.048%,비개배시적은정도제고료근5.5배,체도설계요구.
A power stability control system of the semiconductor laser diode is designed.The system takes three precise amplifiers INA114,OPA602 and OPA335 as its core components using a filter and a slow startup circuits,so it has many advantages such as having a high integration level,using fewer elements and having stable performance.Besides,the system can provide highly steady and continuously adjustable driving current for the semiconductor laser diode using a negative feedback control system of light power.The experimental results have shown that under the driving of the system,the light power stability can reach 0.048% after the semiconductor laser diode has worked for 5 hours,which is nearly 5.5 times higher than that in an open-loop system,hence the design meets the requirement