中国激光, 2015, 42 (7): 0706005, 网络出版: 2022-09-24   

10.6 μm连续激光对Ge-Sb-Se硫系玻璃损伤特性的研究

Study on Damaging Characteristic of 10.6 μm CW Laser to Ge-Sb-Se Chalcogenide Glass
作者单位
宁波大学高等技术研究院红外材料及器件实验室, 浙江 宁波 315211
摘要
基于热传导理论和实验相结合研究了连续CO2 激光辐照Ge20Sb15Se65 硫系玻璃作用下的损伤特性和机理。研究表明:Ge20Sb15Se65玻璃在高功率密度的CO2激光作用下,会出现陨石凹坑、微裂纹和空洞等损伤特征,其原因在于杂质吸收和多声子过程引起的热积累作用导致样品表面温度急剧升高,使得玻璃中熔点较低的Se元素组分气化蒸发,导致玻璃材料分解。当样品的光吸收系数为0.013 cm-1,厚度为3 mm 时,玻璃损伤阈值为74.3 kW/cm2,实验结果与数值分析基本相符。
Abstract
Damaging characteristic of continuous wave (CW) CO2 laser to Ge-Sb-Se chalcogenide glass is studied based on the thermal conduction and experimental study. Studies show that the laser induced damage is mostly damage when heat accumulation causing temperature rising exceeds decomposition temperature of glass. Damage characteristics include meteorite pits, micro-cracks and holes. Se substance is vaporized because of its low melting points, accordingly glass is decomposed in irradiation area. For a Ge-Sb-Se glass of 3 mm thickness, its absorption coefficient is 0.013 cm-1, the sample may be induced damage by a laser irradiation of 74.3 kW/cm2, which is basically consistent with numerical analysis results.

吴丽华, 戴世勋, 张培晴, 刘自军, 王训四, 沈祥, 徐铁峰, 聂秋华. 10.6 μm连续激光对Ge-Sb-Se硫系玻璃损伤特性的研究[J]. 中国激光, 2015, 42(7): 0706005. Wu Lihua, Dai Shixun, Zhang Peiqing, Liu Zijun, Wang Xunsi, Shen Xiang, Xu Tiefeng, Nie Qiuhua. Study on Damaging Characteristic of 10.6 μm CW Laser to Ge-Sb-Se Chalcogenide Glass[J]. Chinese Journal of Lasers, 2015, 42(7): 0706005.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!