铜蒸气激光脉冲终止机理的数值研究  

Numerical study on the terminating mechanisms of copper vapor laser pulse

作　　者：金毅[1] 潘佰良[1] 陈钢[1] 陈坤[1] 姚志欣[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2004年第6期1799-1803,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 3 740 81;10 0 0 40 0 8和 199740 3 7)资助的课题~~

摘　　要：建立了一个反映纵向脉冲放电激励铜蒸气激光动力学过程的自洽物理模型并进行了数值求解 .根据模拟结果深入分析了铜蒸气激光脉冲的终止机理 ,表明受激辐射跃迁、激光下能级的电子碰撞激发和激光上能级的铜原子经电子碰撞被抽运到更高激发能级这三个过程 。A self_consistent physical model describing the kinetic process of the longitudinal pulsed discharge_excited copper vapor laser was established, and numerical solutions of the model were obtained. The terminating mechanisms of the copper vapor laser pulse have been further analyzed according to the simulation results. It is shown that the important factors resulting in the termination of laser pulse are the processes of stimulated emission transition, the electron impact excitation of the lower laser level and the depopulation of the upper laser level to the higher excitation levels by electron collisions.

关 键 词：铜蒸气激光 激光脉冲终止机制 电子碰撞 激发能级 受激辐射跃迁 

分 类 号：O432.12[机械工程—光学工程]