强激光与粒子束2012，Vol.24Issue(10)：2287-2290,4.DOI:10.3788/HPLPB20122410.2287
0.53μm毫秒脉冲激光对GaAs热分解损伤特性
Thermal decomposition damage characteristic in GaAs induced by 0.53 μm millisecond pulse laser
摘要
Abstract
In order to study the surface thermal decomposition damage of millisecond pulse lasers irradiating GaAs at 0. 53 μm wavelength, a two-dimensional axisymmetric heat conduction model was established. Considering the temperature dependences of the thermophysical parameters, the transient temperature fields in the material were simulated by using the finite element method. The distributions of transient temperature fields and variation law with time have been obtained, and the curve of the thermal decomposition damage thresholds on the material surface was also given. Numerical results show that, heat conduction affects the whole process of millisecond pulsed laser interaction and its damage mechanism is mainly thermal effects. The temperature of the center is the highest on the irradiated surface, where it could be damaged by thermal decomposition first. With the increasing of laser energy density, the time of thermal decomposition damage's occurrence would be advancing.关键词
激光损伤/毫秒脉冲激光/瞬态温度场/热分解/GaAsKey words
laser-induced damage/ millisecond pulse laser/ transient temperature field/ thermal decomposition/ GaAs分类
信息技术与安全科学引用本文复制引用
毕娟,金光勇,倪晓武,张喜和,姚志健..0.53μm毫秒脉冲激光对GaAs热分解损伤特性[J].强激光与粒子束,2012,24(10):2287-2290,4.基金项目
吉林省科技支撑重点项目(2010PT) （2010PT）
