Open AccessModulation transfer spectroscopy in a lithium atomic vapor cell
Author(s) -
Dali Sun,
Chao Zhou,
Lin Zhou,
Jin Wang,
Meng Zhan
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.010649
Subject(s) - optics , materials science , spectroscopy , modulation (music) , frequency modulation , amplitude modulation , amplitude , laser , spectral line , pulse amplitude modulation , signal (programming language) , atomic physics , physics , radio frequency , telecommunications , pulse (music) , detector , quantum mechanics , astronomy , computer science , acoustics , programming language
We have investigated modulation transfer spectroscopy of D 2 transitions of 7 Li atoms in a vapor cell. The role of the intensity of the probe beam in the spectrum is important, we have seen unique characteristics of the signal in the crossover peak. In order to find the best signal for laser locking, the slope and frequency offset of the zero-crossing signal are determined. The dependence of the modulation transfer spectra on polarizations of pump and probe beam is demonstrated. The residual amplitude modulation in the system is also considered, and the distortion of the spectra due to the modulation is analyzed. It was found that the crossover peak is more suitable for frequency stabilization due to its better residual amplitude modulation compensation.