金属蒸气激光器窗口污染问题的研究

提出了金属蒸气激光器中金属原子在激光器隔离头中运动的理论模式──无规行走模式．从实验上验证了该模式．在此理论模式的基础上．设计出一种新的抗金属蒸气污染的隔离头．其原理是．在金属蒸气原子无规行走过程中．用多片高凝结系数的金属片来吸附碰撞在它上面的金属蒸气原子．从而实现对窗口的保护作用．还用ＭｏｎｔｅＣａｎｌｏ数值模拟方法．模拟了金属原子的运动，显示了新型隔离头的抗污作用．它的抗污能力比普通的隔离头有明显的提高．

Study on the Mechanism of Metal Vapor Pollution of the Window of Metal Vapor Lasers

In this paper,a theoretical random walk model for the metal vapor condenser ofmetal vapor lasers is presented.The proposed model was verified qualitatiively byexperiment.Based on this model,a new type of condenser was proposed. Its principle is asfollows:several metal pieces of high metal vapor condensation coefficients were used toadsorb the random walking metal vapor particles that collide upon them, as a result,aprotection of the laser windows from the metal vapor pollution was achieved. A Monte Carlosimulation showed that the ability of antipollution for this new type condenser was muchhigher than that of the common condenser.