CW YAG激光器辐射功率稳定技术

引起激光辐射功率漂移的因素比较复杂,本文采用了两级稳定控制系统来逐级抑制YAG激光器辐射功率的涨落。第一级利用激光器本身的反馈信号来控制泵浦电源,使激光器自身维持自动平衡;第二级利用电光晶体调制装置从激光器外进一步稳定激光功率,可得到稳定的激光辐射功率,其稳定度优于0.3%/h。

Stabilization technology of CW YAG laser radiation power

Two stages of stable controlling systems are utilized to inhibit the YAG laser power fluctuation.The frist stage uses back feed of light from laser to control pump supply source so as to make laser self-balanced. The second stage uses electrooptic crystal modulating device further to stabilize laser power. Stable laser radiation power has been obtained with stabilization much better than 0.3% per hour.