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用饱和吸收光谱法对二极管激光器进行了稳频，使得激光器的等效线宽小于１ＭＨｚ，并利用声光调制器使激光的频移量得到控制，能满足激光冷却与囚禁原子对激光频率稳定性和频移量的要求，实现了Ｒｂ原子的激光囚禁．
Saturated absorption spectroscopy was used to stabilize the diode laser so that the equivalent linewidth of the laser was less than 1 MHz and the frequency shift of the laser was controlled by the acousto-optic modulator to meet the requirement of laser cooling and impinging atoms on the laser frequency stability And frequency shift requirements, to achieve the Rb atom laser captivity.