温度和吸收程对稳频精度的影响

Influences of Temperature and Absorption Length on Laser Frequency Stabilities

调制转移光外差光谱信号的信噪比和中心斜率与碘池温度和吸收程等有关。通过搭建稳频系统,得到碘的调制转移光谱信号,然后把激光频率锁定在碘的调制转移光谱谱线上。研究了温度、吸收长度对稳频精度的影响。

Absorption length and temperature of the rodine pool have important effects on signal to noise ratio （S/N） and slope of the modulation transfer spectrum. Modulation transfer spectrum of I2 was got by building a laser frequency stabilization system. The laser frequency was locked on the modulation transfer spectrum of I2. Finally laser frequency stabilities were got at different temperature and different absorption length according to experimental data.