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Propagation formulae and characteristics of partially coherent laser beams in nonlinear media
Optics Letters ( IF 3.6 ) Pub Date : 2019-02-04 , DOI: 10.1364/ol.44.000743
Huan Wang , Xiao-Ling Ji , Hao Zhang , Xiao-Qing Li , Yu Deng

Analytical propagation formulae of partially coherent beams (PCBs) in nonlinear media are derived. It is proven that the ABCD law is valid if a new complex beam parameter is adopted, which presents a simple method to study the propagation of PCBs through an optical system in nonlinear media. In self-focusing media, the spatial coherence for the beam spreading case is better than that for the beam self-focusing case, when the propagation distance is longer than the inversion coherence distance. An optimal beam will necessarily involve a trade-off between collimation and spatial coherence when PCBs propagate in self-focusing media.

中文翻译:

非线性介质中部分相干激光束的传输公式和特性

推导了部分相干光束在非线性介质中的解析传播公式。事实证明,如果采用新的复光束参数,则ABCD定律是有效的,这为研究PCB在非线性介质中通过光学系统的传播提供了一种简单的方法。在自聚焦介质中,当传播距离长于反转相干距离时,光束扩展情况的空间相干性优于光束自聚焦情况的空间相干性。当PCB在自聚焦介质中传播时,最佳光束必定需要在准直和空间相干性之间进行权衡。
更新日期:2019-02-15
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