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

Volume

23

Issue

11

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

697

Lastpage

699

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2123879

Filename

5725163