Title :
Highly tunable and efficient diode pumped operation of Tm3+ doped fibre lasers
Author :
Barnes, W.L. ; Townsend, J.E.
Author_Institution :
Opt. Fibre Group, Southampton Univ., UK
fDate :
5/24/1990 12:00:00 AM
Abstract :
The characteristics of a Tm3+ doped fibre laser pumped by a laser diode are reported. Operating at a wavelength of 1.94 mu m, the laser had a threshold of 4.4 mW, a launched power slope efficiency of 17% and 1 mW output power. Measurements on the tuning range of Tm3+ are presented and lasing is found to be possible from 1.65-2.0 mu m, the specific range depending on the fibre type. The largest range for a single laser was 300 nm.
Keywords :
aluminosilicate glasses; germanate glasses; laser transitions; laser tuning; optical fibres; optical pumping; silicon compounds; solid lasers; thulium; 1 mW; 1.65 to 2 micron; 1.94 micron; 17 percent; 4.4 mW; Al 2O 3-SiO 2:Tm 3+; GeO 2-SiO 2:Tm 3+; Tm 3+ doped fibre lasers; diode pumped operation; launched power slope efficiency; solid lasers; tuning range;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900487
