Focal shifts in focused Hermite-cosh-Gaussian laser beams
Data(s) |
2005
|
---|---|
Resumo |
A closed-form propagation equation of Hermite-cosh-Gaussian beams passing through an unapertured thin lens is derived. Focal shifts are analyzed by means of two different methods according to the facts that the axial intensity of some focused Hermite-cosh-Gaussian beams are null and that of some others are not null but the principal maximum intensity may be located on the axis or off the axis. Optimal focusing for the beams is studied, and the condition of optimal focusing ensuring the smallest beam width is also given. (c) 2005 Elsevier GmbH. All rights reserved. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zeng YS;彭润伍;Zhu XZ.,Optik,2005,116(6):295-298 |
Palavras-Chave | #Hermite-cosh-Gaussian beams #focal shift #optimal focusing |
Tipo |
期刊论文 |