Light propagation through large laser systems
Light propagation through large laser systems
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DOI：
10.1109/jqe.1981.1071337
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发表时间：
1981-09
影响因子：
2.5
通讯作者：
W. Simmons;J. Hunt;W. Warren
中科院分区：
文献类型：
--
作者：
W. Simmons;J. Hunt;W. Warren
回顾了过去十年来固体激光系统的发展，既有技术的进步，也有对非线性效应和线性衍射之间相互作用的认识的增加。讨论了数值方法在模拟相干光束通过大型激光系统传播过程中所涉及的几个物理过程（衍射、自聚焦、增益饱和）中的作用。一个全面的模拟代码建模所有相关的物理现象观察到激光操作（增长的小尺度调制，空间滤波，成像，增益饱和，和光束诱导损伤）详细描述。用该数值编码获得的结果的真实感和准确性源于对空间噪声源的明确识别，以及现代激光器中使用空间滤波器将横向光束调制尺度限制在二维数值分析的实际计算范围内。对编码结果和固体激光器输出性能数据进行了比较。最后，给出了劳伦斯利弗莫尔国家实验室（LLNL）正在建设的大型新星激光系统的设计和性能评估。
The evolution of solid-state laser systems over the past decade, both through technological advances and through increased understanding of the interplay between nonlinear effects and linear diffraction, is reviewed. The role of numerical methods to simulate the several physical processes (diffraction, self-focusing, gain saturation) involved in coherent beam propagation through large laser systems is discussed. A comprehensive simulation code for modeling all of the pertinent physical phenomena observed in laser operations (growth of small-scale modulation, spatial filtering, imaging, gain saturation, and beam-induced damage) is described in detail. The realism and accuracy of results obtained with this numerical code stem from an unambiguous identification of the sources of spatial noise, and from the use of spatial filters in modern lasers to limit the transverse beam modulation scale within the practical computational range of a two-dimensional numerical analysis. Several comparisons between code results and solid-state laser output performance data are presented. Finally, the design and performance estimation of the large Nova laser system presently under construction at the Lawrence Livermore National Laboratory (LLNL) are given.