Open AccessPhosphate-core silica-clad Er/Yb-doped optical fiber and cladding pumped laser
Author(s) -
O. N. Egorova,
Sergey L. Semjonov,
Vladimir V. Velmiskin,
Yuri Yatsenko,
S. E. Sverchkov,
B. I. Galagan,
B. I. Denker,
E. M. Dianov
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.22.007632
Subject(s) - materials science , hard clad silica optical fiber , cladding (metalworking) , all silica fiber , plastic clad silica fiber , phosphate glass , fiber laser , optics , lasing threshold , optical fiber , doping , laser , core (optical fiber) , optoelectronics , slope efficiency , plastic optical fiber , composite material , fiber , fiber optic sensor , wavelength , physics
We present a composite optical fiber with a Er/Yb co-doped phosphate-glass core in a silica glass cladding as well as cladding pumped laser. The fabrication process, optical properties, and lasing parameters are described. The slope efficiency under 980 nm cladding pumping reached 39% with respect to the absorbed pump power and 28% with respect to the coupled pump power. Due to high doping level of the phosphate core optimal length was several times shorter than that of silica core fibers.