Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.071901

Fanglun Yang, Guowen Zhang, Xiaoqi Zhang, Yanli Zhang, Ruifeng Wang, Jianqiang Zhu

引用次数: 0

Abstract

The self-focusing phenomenon of partially coherent beams (PCBs) was simulated using the complex screen method com-bined with the split-step Fourier method to solve the nonlinear Schrödinger equation. Considering the propagation of Gaussian Schell-model beams in a nonlinear medium as an example, the suppression effects of intensity, propagation distance, and spatial coherence on small-scale self-focusing were demonstrated. Simulations of overall and small-scale self-focusing using this method were compared with the existing literature to demonstrate the validity of the method. This method can numerically analyze the degree of self-focusing in PCBs and advance the study of their nonlinearity

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基于复屏和分步傅里叶变换方法的部分相干光束自聚焦

采用复屏法结合分步傅立叶法对部分相干光束(pcb)的自聚焦现象进行了模拟，求解非线性Schrödinger方程。以高斯-谢尔模型光束在非线性介质中的传播为例，研究了光强、传播距离和空间相干性对光束小尺度自聚焦的抑制作用。利用该方法进行了整体和小尺度自聚焦仿真，并与已有文献进行了比较，验证了该方法的有效性。该方法可以对pcb的自聚焦度进行数值分析，促进pcb非线性的研究

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.