A cladding-pumped ytterbium-doped fiber laser is described in this letter. Using unusual pumping source with 915-nm wavelength, slope efficiency up to 75% with respect to absorbed input power and output power is obtained, a maximum output power of 4.006 W with fundamental mode is measured.
© 2005 Chinese Optics Letters
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(140.3480) Lasers and laser optics : Lasers, diode-pumped
Xiaoming Feng, Xiaowei Wang, Gaozhan Fang, Yuanyuan Liu, Ying Wang, and Xiaoyu Ma, "4-W single transverse mode Yb3+-doped fiber laser pumped by 915-nm laser diode array," Chin. Opt. Lett. 3, 251-252 (2005)