【摘要】 <正> 本仪器主要由He-Ne激光器、铌酸锂电光调制器、伺服控制电路组成,其工作原理如图1所示。由于He-Ne激光器输出为线偏振光,为避免增加损耗,光路中省去了起偏器。光路中当在z轴通光的铌酸锂电光晶体的。方向加上的电压发生变化时,由于晶体的电致双折射效应,故使通过该晶体线偏振光的偏振度发生变化,这样通过检偏器后的光强也就发生了变化,本仪器中电光调制器采用如图2所示的正交偏光工作方式,图中Ⅰ为激光功率,V_w更多还原

【Abstract】 LPS-II laser power stabilizer with LiNb0₃ electro-optic modulator and high performance servo-circuit is described. The power instability is less than 4-0.05%, with the insertion loss of less than 50%. If a sinusoidal wave or a square wave signal is inputed into the modulation terminal, a stable laser beam with the game waveform as the electric signal will be obtained.更多还原