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光子学报  2006 

Thermal and Mechanical Effect in Optical Material Induced by Repetitive Pulse Laser
重复脉冲激光辐照光学材料的热力效应

Keywords: Laser physics,Pulse laser,Damage threshold,Gauss beam
激光物理
,脉冲激光,损伤阈值,高斯光束

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Abstract:

A physical model of columned optical material irradiated by repetitive pulses laser was established.The distributions of temperature and stress profile were studied by the use of a 2-D model of heat conduction.By using a example of K9 glass in numerical calculation,it is shown that damage threshold of laser intensity in facus center was influenced by the number,width,repetitive frequency and laser radius of pulse laser. Under most condition,the damage of K9 glass is stress damage.

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