A Yb-doped double-cladding fiber amplifier is v-groove side pumped by a 100-μm -wide, broad-stripe, 975-nm laser diode. The amplifier exhibits, separately, 39% electrical-to-optical conversion efficiency, 89% internal optical-to-optical conversion efficiency, 4-W output power at 1060 nm, and a small-signal gain of 53 dB.
© 1999 Optical Society of America
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4480) Lasers and laser optics : Optical amplifiers
Lew Goldberg, Jeffrey P. Koplow, and Dahv A. V. Kliner, "Highly efficient 4-W Yb-doped fiber amplifier pumped by a broad-stripe laser diode," Opt. Lett. 24, 673-675 (1999)