Analysis of the influence of various effects on frequency shifts of the acetylene saturated absorption lines

作者：Dong Lei^*; Zhang Lei; Dou Hai Peng; Yin Wing Bao; Jia Suo Tang

来源：Chinese Physics B, 2008, 17(1): 152-157.

• frequency shifts
• sub-Doppler spectroscopy
• acetylene
• cavity-enhanced absorption technique

Frequency shifts of the acetylene saturated absorption lines at 1.5 mu m with temperature, gas pressure and laser power have been investigated in detail. The second-order Doppler effect, the recoil effect, the Zeeman effect, the pressure shift and the power shift are taken into consideration. The magnitudes of those shifts caused by various effects are evaluated. In order to reproduce the stability of 5.7 x 10(-14) obtained by Edwards, all necessary conditions are given. The results show that when there is a larger external magnetic field, the Zeeman shift could not be neglected, so that the shield should be employed. And the design of a long cavity is advantageous to reduce the influence of the second-order Doppler effect. The results also show that at least +/- 2.5 degrees C temperature control for cavity can effectively prevent several effects and improve the frequency stability.

• 出版日期2008-1
• 单位山西大学