Journal
OPTICS LETTERS
Volume 35, Issue 18, Pages 3069-3071Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.003069
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We demonstrate a Raman fiber laser with an operating wavelength of 1480 nm and record output power of 81 W. High-power operation is enabled by a long-period grating used to frustrate backward lasing at the Stokes wavelength in the Yb-doped fiber amplifier. A cascaded Raman fiber with a long-wavelength fundamental mode cutoff enables efficient multiple Stokes scattering from 1117 to 1480 nm while preventing further unwanted scattering to 1590 nm. (C) 2010 Optical Society of America
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