Doppler Free FM and Modulation Transfer Sepectroscopies of Cs and Laser Frequency Stabilization

• Main Authors: Li, Chao-Fang, 李昭芳
• Other Authors: Tai, Kuochou
• Format: Others
• Language: en_US
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/38071915053352598921

碩士 === 國立交通大學 === 光電工程研究所 === 86 === 　　In this thesis, we report our study of high resolution spectroscopy in atomic cesium vapor using narrow linewidth dilode lasers. Lamb-dip, FM and modulation transfer spectroscopies in a pump-probe geonmetry were employed to obtain Doppler free hyperfine transitions in Cs atom. FM and modulation transfer data are phase sensitive and contain informtion on both the real (absorptive) and imaginary (dispersive) parts of the transition susceptibilities. Theoretical treatment in the framework of . Maxwell-Bloch equations was carried out to compare with the experiment data. Analytical expressions for the Lamb-dip, FM and modulation transfer signals were derived using the third order perturbation approximation. Excellent agreement was found. We also applied the FM and modulation transfer techniques in stabilizing and locking laser frequency to the Cs hyperfine transitions.