摘要
从等离子体中自由电子密度速率方程出发,考虑到脉冲激光在聚焦区域的特征以及液体中光击穿的实验情况,提出了等离子体椭球模型.通过该模型的建立,对自由电子密度速率方程中电子扩散速率进行了修正,在理论上得到了光击穿的阈值.结果表明,等离子体椭球模型计算出水的击穿阈值更符合实验情况.
Based on the free electron density rate equation,aplasma ellipsoid model was proposed by considering the characteristic of shaping in the focal region.Theoretical breakdown thresholds calculated by plasma ellipsoid model with modifying the electron diffusion rate were presented under the condition of shorter laser pulses.The results show that the breakdown thresholds of water calculated by plasma elliptical model are better in agreement with experimental result than other models.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2012年第8期946-948,共3页
Acta Photonica Sinica
基金
国家自然科学基金(No.11074159)
Met-Cars的结构与磁性研究项目(No.20110401)
物理教学论实验课的教育教学改革项目(No.201019)
实验教学管理网络平台的构建项目(No.20120401)资助
关键词
光击穿
等离子体椭球
阈值
Optical breakdown
Plasma ellipsoid
Breakdown threshold
