title: Selective optical pumping process in Doppler-broadened atoms.
abstract: By solving the optical Bloch equations with the rate-equation approximation, we calculate the time dependence of the magnetic sublevel populations of Doppler-broadened atoms. With an increase of the left-circularly polarized pump intensity, the population fraction of a certain sublevel of the excited state almost reaches 0.3, resulting in anisotropy in the excited state, which is important to the optical filter based on circular birefringence and dichroism. Furthermore, numerical results show that the real saturation pump intensity for the moving atoms is much larger than that for the resting atoms.
authors.affiliation: Institute of Opto-electronics, National Key Laboratory on Tunable Laser Technology, Harbin Institute of Technology, Harbin 150080, China.
authors.forename: Shuangqiang
authors.initials: S
authors.lastname: Liu
authors.forename: Yundong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Daikun
authors.initials: D
authors.lastname: Fan
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Ping
authors.initials: P
authors.lastname: Yuan