Title :
Theoretical and experimental investigation on backward-pumped Yb3+-doped double-clad fiber lasers
Author :
Wu, Caiyuan ; Fan, Yuanyuan ; Dai, Xianzhe ; Luo, Zhengqian ; Cai, Zhiping ; Ye, Chenchun
Author_Institution :
Dept. of Electron. Eng., Xiamen Univ., Xiamen
Abstract :
Based on the rate equations under the steady-state condition, strongly backward-pumped Yb3+-doped double-clad fiber (YDCF) lasers are analyzed numerically. The effects of laser cavity feedbacks and length of YDCF on the laser performance and the dependency of the output laser power on the pump power are investigated. Using a 975 nm laser diode (LD) as the pump source, a backward-pumped YDCF laser with a slope efficiency of 82% is demonstrated experimentally. The output laser power at the wavelength of 1088 nm is up to 85 W. The experimental results are in good agreement with those by numerical simulations.
Keywords :
fibre lasers; laser cavity resonators; laser feedback; optical pumping; ytterbium; JkJk:Yb; backward-pumped double-clad fiber lasers; efficiency 82 percent; laser cavity feedbacks; laser diode; output laser power; power 85 W; pump power; pump source; slope efficiency; wavelength 1088 nm; wavelength 975 nm; Diode lasers; Equations; Fiber lasers; Laser excitation; Laser feedback; Laser theory; Output feedback; Power lasers; Pump lasers; Steady-state;
Conference_Titel :
PhotonicsGlobal@Singapore, 2008. IPGC 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3901-0
Electronic_ISBN :
978-1-4244-2906-6
DOI :
10.1109/IPGC.2008.4781479
