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本文运用缀饰原子（ｄｒｅｓｓｅｄ－ａｔｏｍ）方法，得到了在一定条件下被微波场驱动的型简并量子拍频三能级系统等效于两能级系统的结果，利用两能级系统的激光器理论很便利地给出简并量子拍频激光器的运动主方程。
In this paper, we use the dressed-atom method to get the result that the degenerated quantum beats three-level system driven by the microwave field under certain conditions is equivalent to the two-level system. The two-level laser system The theory is very convenient to give the main equation of motion of degenerate quantum beat laser.