Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission
Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission
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通过大型光纤传输 Nd:YAG 激光脉冲：激光强度分布对能量传输阈值的依赖性
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
P. Pellat
中科院分区：
文献类型：
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作者：
B. Richou;P. Pellat
研究了大芯径多模光纤的激光损伤。基于光束光线追迹法，对高功率激光传输进行了数值分析。数据进行了比较与Nd-YAG激光器和阶跃折射率光纤获得的实验结果。对光纤中体损伤的研究表明，入射激光束的形状和发射条件是光纤中高强度位点的原因。高斯和多模空间分布的数值研究。最后讨论了提高光纤能量传输的最佳激光特性。
A laser-induced damage study on large-core, multimode fiber is presented. We develop a numerical analysis concerning high laser power transmission based on a beam ray tracing. Data are compared with experimental results obtained with a Nd-YAG laser and a step-index fiber. Studies of bulk damage in fiber show that the incident laser beam profile and the launching conditions are responsible of high-intensity sites inside the fiber. Gaussian and multimode spatial profiles are numerically investigated. Finally, we discuss optima laser characteristics to increase the energy transmission in the fiber.