Open AccessResonantly cladding-pumped Yb-free Er-doped LMA fiber laser with record high power and efficiency
Author(s) -
Jun Zhang,
V. A. Fromzel,
Mark Dubinskii
Publication year - 2011
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.19.005574
Subject(s) - materials science , fiber laser , optics , cladding (metalworking) , laser , slope efficiency , doping , laser power scaling , optoelectronics , optical fiber , physics , metallurgy
We report the results of our power scaling experiments with resonantly cladding-pumped Er-doped eye-safe large mode area (LMA) fiber laser. While using commercial off-the-shelf LMA fiber we achieved over 88 W of continuous-wave (CW) single transverse mode power at ~1590 nm while pumping at 1532.5 nm. Maximum observed optical-to-optical efficiency was 69%. This result presents, to the best of our knowledge, the highest power reported from resonantly-pumped Yb-free Er-doped LMA fiber laser, as well as the highest efficiency ever reported for any cladding-pumped Er-doped laser, either Yb-co-doped or Yb-free.