拉盖尔-高斯光束作用下熔石英温度及应力研究  

Research of temperature and thermal stress of fused silica irradiated by Laguerre-Gaussian beam

作　　者：赵麒 白忠臣[2] 周骅 陆安江 张正平[1] 刘桥 ZHAO Qi;BAI Zhongchen;ZHOU Hua;LU Anjiang;ZHANG Zhengping;LIU Qiao(College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China;Key Laboratory of Optoelectronic Technology and Application,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学大数据与信息工程学院,贵阳550025 [2]贵州大学贵州省光电子技术及应用重点实验室,贵阳550025

出　　处：《激光技术》2018年第1期121-126,共6页Laser Technology

基　　金：国际合作研究资助项目(2014DFA00670)

摘　　要：为了研究拉盖尔-高斯光束与熔石英相互作用,采用仿真计算的方法对TEM00,TEM01和TEM103种模式拉盖尔-高斯光束辐照下的熔石英的温度和热应力进行研究,取得了仿真数据。结果表明,激光光强的空间分布影响材料的温度分布和应力分布;温度的积累效应明显,经过连续激光脉冲作用后材料温度持续升高,焦点区域超过1900℃;温度梯度导致热应力产生,局部热应力接近50MPa。该仿真结果为熔石英的加工提供了有益的参考。In order to study the interaction of Laguerre-Gaussian beam and fused quartz,the method of simulation calculation was adopted to study the temperature and thermal stress of the fused quartz irradiated by 3 modes of Laguerre-Gaussian beam(TEM 00,TEM 01,TEM 10).The simulation data were obtained.The results show that spatial distribution of laser intensity affects temperature distribution and stress distribution of the materials.The accumulation effect of temperature is obvious.After continuous laser pulse action,the material temperature continues to rise.The focus area is over 1900℃.The temperature gradient leads to thermal stress.The local thermal stress is close to 50MPa.The simulation results provide the useful reference for the processing of fused silica.

关 键 词：激光技术 温度 仿真 熔石英 拉盖尔-高斯光束 热应力 

分 类 号：TN249[电子电信—物理电子学]