Title :
1.1-kW Ytterbium Monolithic Fiber Laser With Assembled End-Pump Scheme to Couple High Brightness Single Emitters
Author :
Yan, Ping ; Yin, Shupeng ; He, Jianwei ; Fu, Chen ; Wang, Yaping ; Gong, Mali
Author_Institution :
Mech. Eng. Dept., Precision Instrum., Beijing, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
We demonstrate a continuous-wave all-fiber laser with master oscillator and two-stage power amplifier configuration. Diode pumping with single-emitter technology is used with the advantage of low cost and outstanding heat management. An assembled end-pumped scheme is employed to couple high brightness pump power into a gain fiber. The laser system generates 1.1-kW output power at 1085 nm, with the total optical-optical efficiency of about 66.5%, corresponding to 1655 W of applied pump power. The variable absorption of gain fiber is analyzed considering the launching spectra characteristics of single emitters, which is significant for the construction of the pump system.
Keywords :
fibre lasers; optical pumping; ytterbium; Yb; assembled end-pump scheme; assembled end-pumped scheme; continuous-wave all-fiber laser; diode pumping; gain fiber; heat management; high brightness pump power; high brightness single emitters; laser system; launching spectra characteristics; master oscillator; power 1.1 kW; power 1665 W; pump system; single-emitter technology; two-stage power amplifier configuration; variable absorption; wavelength 1085 nm; ytterbium monolithic fiber laser; Fiber lasers; Laser excitation; Optical fiber amplifiers; Optical fiber couplers; Power amplifiers; Power lasers; Pump lasers; All-fiber laser; assembled end-pump; high brightness emitters; high power;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2123879
