title: Highly efficient 4-W Yb-doped fiber amplifier pumped by a broad-stripe laser diode.
abstract: A Yb-doped double-cladding fiber amplifier is v-groove side pumped by a 100-microm -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.
authors: Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375-5672, USA.
authors: L
authors: L
authors: Goldberg
authors: J P
authors: JP
authors: Koplow
authors: D A
authors: DA
authors: Kliner