Abstract

We demonstrate a high-power single-mode cladding-pumped Raman fiber laser. The Raman fiber laser consists of a 1.2km long germanium-doped double-clad fiber in a linear cavity, which is spliced to a single-mode fiber. The laser is end pumped by a multimode erbium–ytterbium-doped fiber, which is coupled to the inner cladding of the Raman fiber. The embedded core was designed to be single mode at the Raman Stokes wavelength, and up to 10W of power was obtained at 1660nm from the single-mode fiber end. The laser has a slope efficiency of 67% and a threshold of 6.5W.

© 2006 Optical Society of America

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