Title :
All-fiber 194 W single-frequency single-mode Yb-doped master-oscillator power-amplifier
Author :
Mermelstein, M.D. ; Brar, K. ; Andrejco, M.J. ; Yablon, A.D. ; Fishteyn, M. ; Headley, C. ; DiGiovanni, D.J.
Author_Institution :
OFS Lab., Somerset
Abstract :
A four-stage all-fiber single-frequency single-mode continuous-wave (cw) master- oscillator power-amplifier (MOPA) at 1083 nm is presented. Small mode area (SMA) and large mode area (LMA) amplifier stages are mode matched with a fiber mode converter (MC) and the signal and pumps are combined with tapered fiber bundles (TFBs). The final power stage uses a LMA Yb doped SBS-suppressing fiber. A single-frequency output power of 194 W is demonstrated with optical net and slope efficiencies of 68% and 80%, respectively.
Keywords :
laser beams; laser modes; mode matching; optical fibre amplifiers; power amplifiers; stimulated Brillouin scattering; ytterbium; JkJk:Yb; LMA ytterbium doped SBS-suppressing fiber; continuous-wave master oscillator power-amplifier; fiber mode converter; large mode area amplifier stage; mode matching; power 194 W; single-frequency output power; single-mode ytterbium -doped MOPA; small mode area amplifier stage; tapered fiber bundles; wavelength 1083 nm; Fiber nonlinear optics; Optical feedback; Optical fiber amplifiers; Optical fiber polarization; Optical harmonic generation; Optical pumping; Optical scattering; Power amplifiers; Power generation; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics Society, 2007. LEOS 2007. The 20th Annual Meeting of the IEEE
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
978-1-4244-0925-9
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2007.4382438
