强激光与粒子束, 2009, 21 (6): 936, 网络出版: 2009-11-24
光学材料亚表面缺陷处强激光电磁场分布的3维模拟
Three-dimensional numerical simulation of light intensity distribution in vicinity of subsurface defect
激光损伤 亚表面缺陷 电磁场时域有限差分法 光场调制 3维模拟 laser induced damage subsurface defect finite-difference time-domain method electric field modulation three dimensional numerical simulation
摘要
利用时域有限差分法求解麦克斯韦旋度方程,研究了光学材料表面缺陷对入射激光场的调制作用,建立了亚表面缺陷的3维模型。以长方体表面缺陷为例,对缺陷附近的光场分布进行了3维数值计算,给出了电场强度3维分布图和缺陷不同尺寸时的最大电场强度。研究表明,相对于2维简化情况,3维表面缺陷对强激光电磁场的调制作用更加明显。
Abstract
In this paper, the modulation of light field by the subsurface defects is investigated in detail by solving Maxwell equations employing the finite-difference time-domain method. Meanwhile, the model of three-dimensional defect is set up. Taking cuboid defect as an example, the three-dimensional electromagnetic intensity distribution around the defect is simulated. The maximum electronic field intensity of different defect three dimensional numerical simulation is given. The results show modulation of three-dimensional defect to light intensity is more distinct than that of two-dimensional defect.
李莉, 雷雨, 肖邵球, 袁晓东, 蒋晓东, 郑万国, 花金荣, 祖小涛. 光学材料亚表面缺陷处强激光电磁场分布的3维模拟[J]. 强激光与粒子束, 2009, 21(6): 936. Li Li, Lei Yu, Xiao Shaoqiu, Yuan Xiaodong, Jiang Xiaodong, Zheng Wanguo, Hua Jinrong, Zu Xiaotao. Three-dimensional numerical simulation of light intensity distribution in vicinity of subsurface defect[J]. High Power Laser and Particle Beams, 2009, 21(6): 936.
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