CAJ | 학술논문

介绍了模拟空间环境条件下激光辐照效应实验方法,搭建实验平台,用纳秒级高峰值功率YAG激光对石英玻璃进行了激光损伤实验,分别测量了低真空和高真空条件下石英玻璃的损伤阈值,对损伤斑微观区域的形貌和化学成分进行了对比分析,给出了激光脉冲能量沉积函数和冲击波膨胀压强的表达式,解释了相应的损伤形貌和损伤阈值变化成因,实验结果与理论分析相符.
개소료모의공간배경조건하격광복조효응실험방법,탑건실험평태,용납초급고봉치공솔YAG격광대석영파리진행료격광손상실험,분별측량료저진공화고진공조건하석영파리적손상역치,대손상반미관구역적형모화화학성분진행료대비분석,급출료격광맥충능량침적함수화충격파팽창압강적표체식,해석료상응적손상형모화손상역치변화성인,실험결과여이론분석상부.
@@@@Experimental methods of laser irradiation effect in simulation space condition are introduced. Exper?imental platforms are built and laser-induced damage experiments are performed to silica glass by YAG laser with nanosecond pulse high peak power. Laser-induced damage thresholds of silica glass in low and high vacuum condi?tion are measured respectively. The morphology and chemical compositions of micro-region in damage speckle are compared and analyzed. The function of laser pulse energy deposition and the express of shock wave expansion pressure are given. Corresponding damage morphology and reasons of threshold change are explained. Experimen?tal results are in accordance with theoretical analysis.