Journal
LASER PHYSICS LETTERS
Volume 10, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/10/8/085103
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Funding
- Department of General Physics of the Russian Academy of Sciences (RAS) project
- RAS Siberian Branch integration partner project
- Russian Ministry of Education and Science
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A CW Raman fiber laser (RFL) operating below 1 mu m with direct pumping by a high-power multimode laser diode at 938 nm has been demonstrated for the first time. The laser cavity is formed by a normally cleaved fiber end and a highly reflective fiber Bragg grating (FBG) inscribed at the opposite end of a 4.5 km long multimode graded-index fiber. Low-index transverse modes are generated at the first Stokes wavelength of similar to 980 nm with an output power of similar to 3 W, while the second Stokes wave at 1025 nm also starts to be generated, thus limiting the 980 nm output.
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