Nonlinear focusing and defocusing of partially coherent spatial beams.
Nonlinear focusing and defocusing of partially coherent spatial beams.
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DOI：
10.1364/ol.34.003003
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发表时间：
2009-10
期刊：
影响因子：
3.6
通讯作者：
Can Sun;D. Dylov;J. Fleischer
中科院分区：
文献类型：
--
作者：
Can Sun;D. Dylov;J. Fleischer
研究了部分相干空间光束在自聚焦和自散焦两种非线性介质中的传输。利用高斯-谢尔模型，我们推导了高度非相干光束在这两种介质中传输时的宽度方程，并用数值模拟验证了该方程的正确性。在偏置光折变晶体中进行的实验与预测的比例相符。
We consider the propagation of a partially coherent spatial beam in both self-focusing and self-defocusing nonlinear media. Using a Gaussian-Schell model, we derive an equation governing the width of highly incoherent beams as they propagate in both types of media and confirm its validity by using numerical simulations. Experiments performed in a biased photorefractive crystal match the predicted scaling.