Open AccessCharacterization of defect luminescence in Yb doped silica fibers: part I NBOHC
Author(s) -
Peter D. Dragic,
C. W. Carlson,
André Croteau
Publication year - 2008
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.16.004688
Subject(s) - photodarkening , materials science , photoluminescence , doping , luminescence , optical fiber , irradiation , fiber , optics , fiber laser , optoelectronics , composite material , physics , nuclear physics
We present an analysis of non-bridging oxygen hole center (NBOHC) defects in Yb-doped silica fibers. Red photoluminescence is observed when several fiber samples are irradiated with green light (532 nm). Both highly Ge-doped and moderately P-doped Yb fibers exhibit red-shifted NBOHC emission spectra while highly Al-doped Yb fibers seem to exhibit NBOHC spectra closer to that of pure silica. NBOHC centers may play a role in the photodarkening process of Yb doped fibers.