激光陀螺谐振腔损耗与相位差测量

Losses and phase-shift measurement of a laser gyroscope cavity

将频率可调激光注入谐振腔,使之产生受迫振荡。用光电探测器接收振荡功率信号,输入计算机分析,绘出谐振腔的功率谱线图。通过测量谱线半波宽度、纵模间隔,计算出谐振腔的损耗及相位差。

Input a laser beam with adjustable frequency into a passive-resonant RLG cavity. Then, receive the output ring beam of the passive-resonant RLg cavity with photoelectric cell. Results were obtained with lower-order mode matching graphics with computer. By measuring the midway width of the spectrum and longitudinal-mode interval, we can compute the losses and phase shift of cavity.