Numerical simulation of modulation to incident laser by submicron to micron surface contaminants on fused silica

被引：0
|
作者：
杨亮 [1 ,2 ]
向霞 [1 ]
苗心向 [2 ]
李莉 [1 ]
袁晓东 [2 ]
晏中华 [1 ]
周国瑞 [2 ]
吕海兵 [2 ]
郑万国 [2 ]
祖小涛 [1 ]
机构：
[1] School of Physical Electronics University of Electronic Science and Technology of China
[2] Research Center of Laser Fusion China Academy of Engineering Physics
来源：
Chinese Physics B | 2016年 / 25卷 / 01期
基金：
中国国家自然科学基金;
关键词：
fused silica; laser-induced damage; particulate contaminants; modulation;
D O I：
暂无
中图分类号：
TN241 [激光物理和基本理论];
学科分类号：
0702 ; 070207 ;
摘要：
Modulation caused by surface/subsurface contaminants is one of the important factors for laser-induced damage of fused silica. In this work, a three-dimensional finite-difference time-domain(3D-FDTD) method is employed to simulate the electric field intensity distribution in the vicinity of particulate contaminants on fused silica surface. The simulated results reveal that the contaminant on both the input and output surfaces plays an important role in the electric field modulation of the incident laser. The influences of the shape, size, embedded depth, dielectric constant(εr), and the number of contaminant particles on the electric field distribution are discussed in detail. Meanwhile, the corresponding physical mechanism is analyzed theoretically.
引用
收藏
页码：636 / 643
页数：8
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