单个飞秒激光作用下熔融石英的微爆阈值研究  

Micro-explosions Threshold Induced by a Single Focused Femtosecond Laser Pulse in Fused Silica

作　　者：马琳[1] 石顺祥[1] 程光华[2] 刘青[2] 赵卫[2] 陈国夫[2] 

机构地区：[1]西安电子科技大学技术物理学院,501室西安710071 [2]中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710068

出　　处：《光子学报》2007年第6期969-971,共3页Acta Photonica Sinica

基　　金：中国科学院知识创新基金(40001043)资助

摘　　要：对飞秒激光脉冲在透明介质中产生微爆的物理机制进行了研究,比较了长短激光脉冲的光击穿机制,基于Fokker-Planck方程建立了飞秒激光微爆模型,给出了飞秒激光脉冲在透明介质中产生微爆的阈值解析表达式.针对飞秒激光脉冲在熔石英介质中的微爆阈值进行了计算,得到的结果与实验结果基本相符.In this letter,micro explosions mechanisms induced by a single focused femtosecond laser pulse are investigated. Optical breakdown mechanisms of long laser pulse and short laser pulse are compared. The analytic expressions of micro-explosions threshold are derived. Based on this formula, micro-explosions threshold induced by a single focused femtosecond laser pulse in fused silica is calculated. The calculated results agree with the experimental data well.

关 键 词：飞秒激光脉冲 透明介质 熔融石英 微爆阈值 

分 类 号：TN249[电子电信—物理电子学] TN248.1