Open AccessAn intracavity, frequency-doubled self-Raman vortex laser
Author(s) -
Andrew Lee,
Chunyu Zhang,
Takashige Omatsu,
Helen M. Pask
Publication year - 2014
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.22.005400
Subject(s) - optics , raman scattering , laser , raman laser , energy conversion efficiency , angular momentum , raman spectroscopy , diode , optical vortex , topological quantum number , physics , light beam , nonlinear optics , materials science , beam (structure) , optoelectronics , quantum mechanics
We demonstrate intracavity frequency doubling of the self-Raman field generated within a diode end-pumped, solid state Nd:GdVO(4) vortex laser. A maximum output power of 727 mW is generated at 586 nm with an overall diode-to-yellow conversion efficiency of 4%. Conservation of orbital angular momentum is observed under intracavity frequency doubling, with the topological charge of the yellow beam being twice that of the Stokes beam.