Open AccessGeneration of femtosecond diffraction-compensated beam through an opaque disk
Author(s) -
Marc Brunel,
Driss Mgharaz,
Sébastien Coëtmellec
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.010390
Subject(s) - optics , femtosecond , opacity , diffraction , collimated light , beam (structure) , lens (geology) , laser beam quality , materials science , laser , nonlinear optics , laser beams , physics
The generation of a femtosecond diffraction-compensated beam through an opaque disk is presented: 100 fs pulses are focused in the vicinity of an opaque disk. A bright beam surrounded by concentric rings is generated. The beam can be collimated by a lens. A non-diffracting femtosecond beam which conserves a 500microm large central spot over more than 1.7m is then observed, without any nonlinear mechanism. Our theoretical analysis predicts well the results.