Quantum-efficiency measurements in oxygen-containing gallium lanthanum sulphide glasses and fibers doped with Pr/sup 3+/

Author

Hector, J.R. ; Hewak, D.W. ; Wang, J. ; Moore, R.C. ; Brocklesby, W.S.

Author_Institution

Dept. of Phys., Southampton Univ., UK

Volume

9

Issue

4

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

443

Lastpage

445

Abstract

The production of competitive fiber amplifiers in the 1.3-μm region requires both good quantum efficiency in the lasing ion and the capability to produce low-loss fibers. Oxygen-doped gallium lanthanum sulphide (GLS) doped with Pr/sup 3+/ may provide a route to both, We describe measurements of the quantum efficiency of Pr/sup 3+/ emission at 1.3 μm from the ¹G₄-³H₅ transition in GLS glass and fiber containing varying quantities of lanthanum oxide. We show that oxide-containing GLS glasses, which are known to have considerably better thermal and glass-forming properties than pure GLS, can show quantum efficiencies of up to 84% of that of pure GLS, No degradation of quantum efficiency is seen when oxide-containing GLS glass is pulled into fiber form.

Keywords

fibre lasers; fluorescence; gallium compounds; lanthanum compounds; optical fibre losses; optical glass; praseodymium; radiative lifetimes; /sup 1/G/sub 4/-/sup 3/H/sub 5/ transition; 1.3 mum; 84 percent; Ga/sub 2/S/sub 3/-La/sub 2/S/sub 3/-La/sub 2/O/sub 3/:Pr; Pr/sup 3+/ doping; competitive fiber amplifiers; fibers; glass-forming properties; lasing ion; low-loss fibers; luminescence; oxide-containing GLS glasses; oxygen-containing gallium lanthanum sulphide glasses; quantum-efficiency measurements; thermal properties; Doped fiber amplifiers; Glass; Lanthanum; Laser excitation; Optical fiber amplifiers; Optical fibers; Optical materials; Phonons; Production; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.559382

Filename

559382