Open AccessFrequency doubling of multimode diode-pumped GRIN-fiber Raman lasers
Author(s) -
А. П. Кузнецов,
Ekaterina A. Evmenova,
E. I. Dontsova,
S. I. Kablukov,
Sergey A. Babin
Publication year - 2019
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.27.034760
Subject(s) - optics , materials science , laser , multi mode optical fiber , raman spectroscopy , fiber laser , diode , optoelectronics , photonic crystal fiber , laser beam quality , raman scattering , semiconductor laser theory , optical fiber , laser beams , physics
Frequency doubling of multimode diode-pumped GRIN-fiber Raman laser with improved beam quality (M 2 =1.9-2.6 depending on configuration) in a simple single-pass scheme with 5-mm PPLN crystal is studied. After scheme optimization and elimination of back reflection and crystal heating effects, an efficient conversion into blue spectral range with output power of about 0.4 W@488 nm and 0.64 W@477 nm has been demonstrated.