Zheng Yi, Ma Ping, Li Haibo, Liu Zhichao, Chen Songlin
Fine Optical Engineering Research Centre, Chengdu 610041, China.
Opt Express. 2013 Jul 15;21(14):16605-14. doi: 10.1364/OE.21.016605.
UV laser induced damage (LID) on exit surface of fused silica could cause modulation effect to transmitted beam and further influence downstream propagation properties. This paper presents our experimental and analytical studies on this topic. In experiment, a series of measurement instruments are applied, including beam profiler, interferometer, microscope, and optical coherent tomography (OCT). Creating and characterizing of LID on fused silica sample have been implemented. Morphological features are studied based on their particular modulation effects on transmitted beam. In theoretical investigation, analytical modeling and numerical simulation are performed. Modulation effects from amplitude, phase, and size factors are analyzed respectively. Furthermore, we have novelly designed a simplified polygon model to simulate actual damage site with multiform modulation features, and the simulation results demonstrate that the modeling is usable and representative.
紫外激光对熔融石英出射面造成的损伤（LID）会对透射光束产生调制效应，并进一步影响下游的传播特性。本文介绍了我们在该主题上的实验和分析研究。在实验中，应用了一系列测量仪器，包括光束轮廓仪、干涉仪、显微镜和光学相干断层扫描（OCT）。已经在熔融石英样品上产生并表征了LID。基于它们对透射光束的特定调制效应研究了形态特征。在理论研究中，进行了分析建模和数值模拟。分别分析了幅度、相位和尺寸因素的调制效应。此外，我们创新性地设计了一个简化的多边形模型来模拟具有多种调制特征的实际损伤部位，模拟结果表明该建模是可用的且具有代表性。
