Nonparaxial propagation of rotating Cosh-Gaussian beams

被引:8
|
作者
Deng, Dongmei [1 ]
Peng, Xi [1 ]
Chen, Chidao [1 ]
Chen, Bo [1 ]
Peng, Yulian [1 ]
Zhou, Meiling [1 ]
机构
[1] S China Normal Univ, Guangdong Prov Key Lab Nanophoton Funct Mat & Dev, Guangzhou 510631, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Exact rotating Cosh-Gaussian; Poynting vector; Free space; VIRTUAL SOURCE; COMPLEX-SOURCE;
D O I
10.3938/jkps.66.774
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Starting from the inhomogeneous Helmholtz equation, we obtain the exact rotating Cosh-Gaussian vector potential solution oriented along the propagation axis (i.e., the z axis). The electric and the magnetic fields are both expressed in terms of rotating Cosh-Gaussian beams (RCGBs) that are rigorous solutions to Maxwell's equations. The paraxial and the nonparaxial RCGBs have an inherent rotating property in that the angular velocity decreases with increasing the propagation distance. The evolution of the Poynting vector of the RCGBs is analyzed as they propagate in free space.
引用
收藏
页码:774 / 778
页数:5
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