中国激光, 2013, 40 (9): 0908006, 网络出版: 2013-08-12   

光学元件亚表面损伤的激光散射仿真研究

Simulation Research on the Light-Scattering Properties of the Subsurface Damage of Optical Components
作者单位
西安工业大学陕西省薄膜与光学检测技术重点实验室, 陕西 西安 710032
摘要
光学元件的亚表面损伤直接影响其使用性能和抗激光损伤阈值等重要指标,而造成这些危害的根本原因是损伤引入的光散射。针对K9玻璃光学元件建立损伤模型,结合时域有限差分(FDTD)算法,模拟研究了会聚入射光被光学元件亚表面缺陷如微裂纹、气泡等调制后的光场分布以及光沿纵深方向扫描时探测器所接收的亚表面损伤引入的散射光强变化。研究结果对探索光学元件亚表面损伤的测量方法有重要的理论指导意义。
Abstract
There is a serious effect directly for optical element sub-surface damage to optical performance and laser damage threshold in the application, and the primary cause is due to light scattered by subsurface damage. Aim to K9 glass optical element, the simulation model is built. By using finite difference time domain (FDTD) method, the light field distributions, which are the incident light modulated by subsurface micro-cracks and bubbles, are simulated, and the scattering light intensity variation received by detector is analyzed. The results have important theoretical guideline to further study the measuring methods of optical components subsurface damage.
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田爱玲, 王辉, 王春慧. 光学元件亚表面损伤的激光散射仿真研究[J]. 中国激光, 2013, 40(9): 0908006. Tian Ailing, Wang Hui, Wang Chunhui. Simulation Research on the Light-Scattering Properties of the Subsurface Damage of Optical Components[J]. Chinese Journal of Lasers, 2013, 40(9): 0908006.

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