一维σ^+-σ^-冷却光和再抽运光对一维磁光陷阱中的多能级钠原子作用的研究

Effects of One Dimensional σ + σ - Cooling and Re Pumping Light on the Multi Level Na Atoms in an One Dimensional Magneto Optical Trap

表述了钠Ｄ２线跃迁所包含的２４个磁子能级的原子在一维σ＋－σ－冷却光和再抽运光中产生的稳态多普勒冷却力。讨论了不同磁场强度、不同再抽运光强和失谐情况下原子的多普勒冷却力及对磁光陷阱中最大捕陷速度。

The formulas of populations distribution and Doppler cooling force dependent on the velocity of atoms in a non uniform magnetic field were described by considering the physical model of one dimensional σ + σ - cooling and repumping lights acting on 24 sub level of Sodium atoms. The influence of velocity dependent Doppler forces on the maximum capture speed and temperature of atoms were discussed at the conditions of different magnetic field, different intensities and detunings of repumping lights.