Open AccessPhotodarkening and photobleaching of an ytterbium-doped silica double-clad LMA fiber
Author(s) -
Johan Boullet,
Inka Manek-Hönninger,
Thierry Cardinal,
F. Guillen,
Maciej Podgórski,
S. Ermeneux,
Ramatou Bello Doua,
F. Salin
Publication year - 2007
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.15.001606
Subject(s) - photodarkening , photobleaching , materials science , optics , lasing threshold , fiber , silica fiber , ytterbium , fiber laser , absorption (acoustics) , optical fiber , optoelectronics , doping , fluorescence , wavelength , physics , composite material
We studied the temporal evolution of the photodarkening effect in an Yb-doped silica LMA fiber. The absorption spectra exhibit an increase in absorption in the visible and in the near infrared spectral range when the fiber is exposed to pump light around 980 nm. We show the influence of the photodarkening on the cw lasing properties of the fiber, and demonstrate photobleaching of the same fiber by exposure to UV light at 355 nm. The corresponding absorption spectra and lasing performances are shown and are entirely comparable to those of a new fiber.