文献类型：会议论文

英文题名：Propagation invariance and dark hollow structures of sinh-Gaussian beams with small complex parameters

作者：Zhu, Kaicheng Liang, Ruisheng Yi, Yajun Zhu, Jie Tang, Huiqin

第一作者：Zhu, Kaicheng

通信作者：Zhu, Jie|[14440901970e7c97ae94b]朱洁;

机构：[1] Department of Electronics and Information Engineering, Guangzhou College of Technology and Business, Guangzhou, China; [2] School of Physics and Electronics, Central South University, Changsha, China; [3] School of Science, Guizhou Institute of Technology, Guiyang, Guizhou, China

第一机构：Department of Electronics and Information Engineering, Guangzhou College of Technology and Business, Guangzhou, China

通信机构：|贵州理工学院理学院

会议论文集：2nd International Seminar on Computer Science and Engineering Technology, SCSET 2020

会议日期：October 30, 2020 - October 31, 2020

会议地点：Shanghai, China

语种：英文

外文关键词：Gaussian distribution - Numerical methods

年份：2021

摘要：Through investigating the sinh-Gaussian beam with complex beam parameters, it is the first time to find that such beams can carry vortices and exhibit dark hollow intensity distributions when the complex beam parameters are sufficiently small. A closed-form propagation equation for sinh-Gaussian beams through paraxial ABCD optical systems is derived based on the Collins formula and illustrated with numerical methods. It is shown that the perfect hollow configuration can retain a quite long propagating distance under small complex beam parameters. The analytical discussions affirm the numerical conclusions. ? Published under licence by IOP Publishing Ltd.