Title :
New class of fibre laser based on lead-germanate glass
Author :
Wang, Jiacheng ; Brocklesby, William S. ; Deol, Rajinder ; Pearson, A. ; Hanna, D.C. ; Payne, David N.
fDate :
5/21/1992 12:00:00 AM
Abstract :
The first fibre laser based on rare-earth doped lead-germanate glass is reported. The thulium-doped fibre had a background loss of 2 dBm-1 and a maximum phonon energy of approximately 920 cm-1. Lasing was achieved on the Tm3+ 3H4-3H6 transition at 1.905 mu m with a 3.6 m W threshold, when diode-pumped at 790 nm. A quantum efficiency of 30% was obtained.
Keywords :
barium compounds; fibre lasers; germanate glasses; lead compounds; optical glass; potassium compounds; thulium; zinc compounds; 1.905 micron; 3.6 mW; 30 percent; 790 nm; 3H 4- 3H 6 transition; GPBZK; GeO 2-PbO-BaO-ZnO-K 2O:Tm 3+; background loss; fibre laser; phonon energy; quantum efficiency; threshold;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920648
