Generation of Laguerre-Gaussian LGp0 beams using binary phase diffractive optical elements

In recent years, considerable attention has been devoted to laser beams with specific intensity profile, i.e., non-Gaussian. In this work, we present a novel technique to generate high-radial-order Laguerre-Gaussian beams LG(p0) based on the use of a binary phase diffractive optical element (BPDOE)....

Full description

Saved in:
Bibliographic Details
Published inApplied optics. Optical technology and biomedical optics Vol. 53; no. 21; p. 4761
Main Authors Bencheikh, Abdelhalim, Fromager, Michael, Ameur, Kamel Aït
Format Journal Article
LanguageEnglish
Published United States 20.07.2014
Online AccessGet more information

Cover

More Information
Summary:In recent years, considerable attention has been devoted to laser beams with specific intensity profile, i.e., non-Gaussian. In this work, we present a novel technique to generate high-radial-order Laguerre-Gaussian beams LG(p0) based on the use of a binary phase diffractive optical element (BPDOE). The latter is a phase plate made up of annular zones introducing alternatively a phase shift equal to 0 or π modeled on positions which do not coincide with the position of the zeros of the desired LG(p0) beam. The LG(p0) beams are obtained by transforming a fundamental Gaussian beam through an appropriate BPDOE. The design of the latter is based on the calculation of the Fresnel-Kirchhoff integral, and the diffracted intensity at the focus plane of a lens has been modeled analytically for the first time. The numerical simulations and experiment demonstrate a good beam quality transformation. Obtained LG(p0) are suitable for atom trap and pumping solid state laser applications.
ISSN:2155-3165