Orbital angular momentum of Laguerre-Gaussian beams beyond the paraxial approximation

被引：40

作者：

Cerjan, Alexander ^{[1
]}

Cerjan, Charles ^{[2
]}

机构：

[1] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2011年 / 28卷 / 11期

关键词：

PROPAGATION; VECTOR; LIGHT;

D O I：

10.1364/JOSAA.28.002253

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We derive a full field solution for Laguerre-Gaussian beams consistent with the Helmholtz equation using the angular spectrum method. Field components are presented as an order expansion in the ratio of the wavelength to the beam waist, f = lambda/(2 pi omega(0)), which is typically small. The result is then generalized to a beam of arbitrary polarization. This result is then used to reproduce the signature angular momentum properties of Laguerre-Gaussian beams in the paraxial limit. The subsequent higher-order term is similarly obtained, which does not display a clear separation of orbital and spin angular momentum components. c 2011 Optical Society of America

引用

页码：2253 / 2260

页数：8

共 24 条

[1] GAUSSIAN-BEAM PROPAGATION BEYOND THE PARAXIAL APPROXIMATION [J].