Title :
High efficiency 110 W monolithic FBG tuned 2 μm fiber laser
Author :
Frith, G.P. ; Samson, B. ; Carter, A. ; Farroni, J. ; Tankala, K.
Author_Institution :
Nufern, East Granby
Abstract :
The paper reports a robust fibre Bragg grating (FBG) tuned Tm-doped fiber laser pumped with 793 nm delivering 110 W CW at 2 μm with 55% slope efficiency. The laser operated in single transverse mode at 2050 nm (FWHM ˜2 nm) determined by the reflectivity of the FBG. This demonstration was enabled by recently developed true large mode area (LMA) Tm-doped fibers which employ the use of an undoped pedestal region surrounding the rare earth doped core.
Keywords :
Bragg gratings; fibre lasers; laser tuning; optical fibres; JkJk:Tm; fiber laser; fibre Bragg grating; monolithic FBG laser; power 110 W; rare earth doped core; single transverse mode; true large mode area fiber; tuned; undoped pedestal region; wavelength 2 μm; wavelength 2050 nm; wavelength 793 nm; Bragg gratings; Fiber gratings; Fiber lasers; Laser excitation; Laser modes; Laser transitions; Laser tuning; Power generation; Power lasers; Pump lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0930-3
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386482
