Characterization of defect luminescence in Yb doped silica fibers: part I NBOHC.
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.
Dragic
Peter D
PD
Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 1406 W. Green St., Urbana, IL, 61801, USA. p-dragic@uiuc.edu
Carlson
Chad G
CG
Croteau
André
A
D016477:Artifacts; D004867:Equipment Design; D004868:Equipment Failure; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D008163:Luminescent Measurements / Q000295:instrumentation*; D012822:Silicon Dioxide / Q000737:chemistry*; D015018:Ytterbium
D012822:Silicon Dioxide; D015018:Ytterbium