Exact description of a cylindrically symmetrical complex-argument Laguerre-Gauss beam
Data(s) |
15/05/2008
|
---|---|
Resumo |
Based on the perturbative series representation of a complex-source-point spherical wave an expression for cylindrically symmetrical complex-argument Laguerre-Gauss beams of radial order n is derived. This description acquires the accuracy up to any order of diffraction angle, and its first three corrected terms are in accordance with those given by Seshadri [Opt. Lett. 27, 1872 (2002)] based on the virtual source method. Numerical results show that on the beam axis the number of orders of nonvanishing nonparaxial corrections is equal to n. Meanwhile a higher radial mode number n leads to a smaller convergent domain of radius. (C) 2008 Optical Society of America. |
Identificador | |
Idioma(s) |
英语 |
Palavras-Chave | #数理科学和化学 ::光学 |
Tipo |
期刊论文 |