title: Modulation transfer spectroscopy in a lithium atomic vapor cell.
abstract: We have investigated modulation transfer spectroscopy of D2transitions of7Li 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.
authors.forename: Dali
authors.initials: D
authors.lastname: Sun
authors.forename: Chao
authors.initials: C
authors.lastname: Zhou
authors.forename: Lin
authors.initials: L
authors.lastname: Zhou
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Mingsheng
authors.initials: M
authors.lastname: Zhan