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Numerical simulation of modulation to incident laser by submicron to micron surface contaminants on fused silica 被引量:1
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作者 杨亮 向霞 +7 位作者 苗心向 李莉 袁晓东 晏中华 周国瑞 吕海兵 郑万国 祖小涛 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第1期632-639,共8页
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 empl... 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 mod- ulation of the incident laser. The influences of the shape, size, embedded depth, dielectric constant (er), and the number of contaminant particles on the electric field distribution are discussed in detail. Meanwhile, the corresponding physical mechanism is analyzed theoretically. 展开更多
关键词 fused silica laser-induced damage particulate contaminants MODULATION
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