Open AccessAberrations induced by anti-ASE cap on thin-disk active element
Author(s) -
Aidas Aleknavičius,
Martynas Gabalis,
Andrejus Michailovaś,
Valdas Girdauskas
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.014530
Subject(s) - optics , materials science , laser , brightness , optical disc , thin disk , optical path , disk laser , beam (structure) , optical path length , thin film , laser power scaling , physics , stars , astronomy , nanotechnology
Optical aberrations induced in thin-disk laser elements with an undoped layer, performing as an anti-ASE cap, are analyzed. A numerical model, used for calculations of the optical path difference (OPD) induced by temperature distribution inside the laser element and by deformation of surfaces, was confirmed experimentally. Results of numerical modeling manifest that adding an undoped layer on the thin-disk has detrimental effect on the reflected laser beam brightness and scaling. It is also shown that brightness of a thin-disk laser may be enhanced by the use of the Gaussian pump beam profile.