DocumentCode
775186
Title
Efficient thulium-doped 2-μm germanate fiber laser
Author
Jianfeng Wu ; Shibin Jiang ; Tao Luo ; Jihong Geng ; Peyghambarian, N. ; Barnes, N.P.
Author_Institution
Npphotonics Inc., Tucson, AZ, USA
Volume
18
Issue
2
fYear
2006
Firstpage
334
Lastpage
336
Abstract
We report an efficient fiber laser operating near 2 μm. The glass for the fiber is germanate that is highly doped with thulium. The effect of cross relaxation energy transfer between thulium ions as observed from emission spectrum of the glass samples results in the laser having a very high slope efficiency of 58% with respect to launched power. This corresponds to a quantum efficiency of 1.79, indicating that each pump photon leads to near 1.8 excited Tm/sup 3+/ ions.
Keywords
fibre lasers; germanate glasses; laser transitions; optical glass; optical pumping; thulium; 1.79 percent; 2 mum; 58 percent; GeO:Tm; cross relaxation energy transfer; pump photon; quantum efficiency; slope efficiency; thulium-doped germanate fiber laser; Absorption; Doping; Energy exchange; Fiber lasers; Glass; Laser excitation; Laser transitions; Optical fibers; Pump lasers; Quantum well lasers; Germanate glass; optical fiber lasers; slope efficiency; thulium;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2005.861970
Filename
1564146
Link To Document