Open AccessPhotostability of laser-active centers in bismuth-doped GeO2–SiO2 glass fibers under pumping at 1550 nm
Author(s) -
Sergey Alyshev,
А. В. Харахордин,
Elena Firstova,
Aleksandr Khegai,
Mikhail Melkumov,
V. F. Khopin,
А. С. Лобанов,
A. N. Guryanov,
S. V. Firstov
Publication year - 2019
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.27.031542
Subject(s) - bismuth , materials science , optics , doping , laser , fiber laser , active medium , optical fiber , optoelectronics , physics , metallurgy
We report experimental measurements and numerical calculations regarding the photostability of laser-active centers associated with bismuth (BACs) in Bi-doped GeO 2 -SiO 2 glass fibers under pumping at 1550 nm at different temperatures. It was discovered that BACs are unstable under 1550-nm pumping when the temperature is elevated to hundreds of degrees centigrade. A simple numerical model was proposed to account for the discovered instability which turned out to be in good agreement with the experimental data.