Title :
Direct evidence for laser reabsorption as initial cause for self-pulsing in three-level fibre lasers
Author_Institution :
Opt. Fibre Technol. Centre, Sydney Univ., NSW, Australia
fDate :
12/5/2002 12:00:00 AM
Abstract :
The temporal characteristics of a standing wave Tm3+-doped silica fibre laser are presented. For uni-directional pumping, the output displays the well-known self-pulsation phenomenon, but with bidirectional pumping, a significant increase in the laser stability is observed. A longitudinally uniform population inversion is shown to be of paramount importance to the stability of three-level lasers.
Keywords :
fibre lasers; laser stability; optical pumping; population inversion; silicon compounds; thulium; SiO2:Tm; Tm3+-doped silica fibre laser; bidirectional pumping; laser reabsorption; laser stability; longitudinally uniform population inversion; self-pulsation phenomenon; standing wave fibre laser; temporal characteristics; three-level fibre lasers; uni-directional pumping;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021148
