Journal
OPTICS LETTERS
Volume 42, Issue 1, Pages 9-12Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.42.000009
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- Russian Science Foundation (RSF) [14-22-00118]
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High beam quality and narrow spectrum have been obtained in a Raman fiber laser based on a 1.1 km long graded-index fiber directly pumped by a multimode 915 nm laser diode. The generation of a near-diffraction-limited beam at 954 nm with M-2 <= 1.27 and Delta lambda = 0.42 nm at an output power above 10 W is enabled by a cavity mirror made of a special fiber Bragg grating inscribed by a femto-second technique in the central part of the graded-index fiber core. (C) 2016 Optical Society of America
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