Open AccessNanosecond parametric Raman anti-Stokes SrWO4 laser at 507 nm with collinear phase matching
Author(s) -
S. N. Smetanin,
Michal Jelínek,
D. P. Tereshchenko,
В. Е. Шукшин,
M. V. Konyukhov,
A.G. Papashvili,
I.S. Voronina,
L. I. Ivleva,
Václav Kubeček
Publication year - 2020
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.397579
Subject(s) - optics , birefringence , laser , stokes parameters , raman laser , raman scattering , materials science , stokes shift , phase (matter) , coherent anti stokes raman spectroscopy , energy conversion efficiency , raman spectroscopy , physics , optoelectronics , scattering , fluorescence , quantum mechanics
Collinear phase matching of the Stokes ↔ anti-Stokes interaction for Raman-active crystals with different birefringence was studied theoretically as well as experimentally. It was shown that collinear phase matching of the Stokes ↔ anti-Stokes interaction in low-birefringent crystals can be insensitive to angular mismatch if a phase matching angle is higher than 60 ° . We have developed and experimentally realized an extracavity parametric Raman anti-Stokes laser based on a low-birefringent SrWO 4 . Cyan 507-nm anti-Stokes conversion from green (532 nm) pump radiation of a 5-ns, 1-mJ second harmonic Nd:YAG laser has been obtained. Laser setup with a single beam excitation made it possible to use an output face of the SrWO 4 crystal as an output coupler because of wide (6 ° ) angular tolerance of collinear phase matching that resulted in an increase of slope efficiency of anti-Stokes generation higher than 3% at the anti-Stokes energy output of a 10-µJ level.
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