^(127)I_2频率调制光谱在微型Nd∶YVO_4激光稳频中的应用

Application of ^(127)I_2 Doppler-broadened FM Spectroscopy to Frequency Stabilization of Mini-Nd∶YVO_4 Laser

采用 48 0MHz频率调制和光外差光谱检测技术 ,将半导体激光抽运Nd∶YVO4微型激光器的频率锁定在碘分子 5 32nm波段多普勒加宽的吸收谱线上。分析伺服误差信号表明 ,采用该技术锁定微型Nd∶YVO4激光频率 ,其稳定度可达到 10 - 1 0 (1s积分时间 )。

By using frequency modulation optical heterodyne technique, the frequency of diode pumped Nd∶YVO 4/KTP intra cavity frequency doubling mini laser is locked to Doppler broadened absorption line of 127 I 2 near 532 nm. The analysing of error signal shows that it is possible to make laser frequency stability up to 10 -10 at 1 s average time.