材料科学
激光器
光纤
光学
辐照
热的
有限元法
波长
压力(语言学)
纤维
复合材料
光电子学
哲学
气象学
核物理学
物理
热力学
语言学
作者
Wenhua Lou,Yingshi Hu,Baonan Jia,Rundi Zhai,Xiao‐Guang Ma,Yong‐Pan Gao,Pengfei Lu,Jun Chen
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2023-07-26
卷期号:62 (07)
被引量:6
标识
DOI:10.1117/1.oe.62.7.076102
摘要
Laser-induced damage threshold (LIDT) is investigated at several wavelengths in the high-purity silica optical fiber. The finite element method (FEM) is used to study transmission mode, LIDT, temperature distribution, and thermal stress distribution of the fiber. Our results show that the center of the front surface is subjected to severe thermal effects under laser irradiation and consequently, and it is susceptible damage. The variations in temperature and thermal stress are identified as increasing with laser fluences, which show a similar tendency. When laser fluences surpass the LIDT, such as 35 GW / cm2, the temperature at the front surface center shows a sudden growth and the melting damage appears, and no stress damage occurs at this time. Notably, the melting effect of high purity fused silica optical fiber is simulated by numerical calculation based on ray optics for the first time. Our research can provide systematic FEM simulations for the LIDT of silica optical fibers.
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