集成检波模块的高精度激光波长稳定系统

High Laser Wavelength Stabilization System in Wavelength-detector Integrated Module

基于半导体激光器(LD)波长和温度之间的变化原理,对LD输出波长的稳定性进行了实验研究。采用集成有检波器件的LD组件,设计了高精度的激光波长稳定系统。该系统不需要添加任何附加装置,利用温度对波长漂移进行补偿控制,实现了波长的实时锁定。通过增加注入电流、改变设定温度的方法对系统进行验证。实验表明,该系统的波长控制精度≤±2pm;在整个激光器的寿命周期内,系统的波长稳定度≤2pm。

An experimental study on wavelength stability of laser diode (LD) was presented, which was based on the wavelength-temperature relationship. An ultrahigh wavelength stabilization was designed by adopting a new integrated semiconductor LD module with a wavelength-monitor. There have no use for other additional devices in this design. The wavelength drift is compensated through temperature, and the wavelength real time lock is realized. Enhancing the bias current and changing the setting temperature were employed to test the characteristic of the system. Experiment shows that the wavelength stability is less than or equal 2 pm, and that the wavelength control precision is less than or equal ±2 pm.