Abstract

We report a single-frequency distributed Bragg reflector (DBR) fiber laser at 930 nm for the first time, to the best of our knowledge. A $\sim 2.5\mathrm{cm}$ long commercial highly neodymium-doped silica fiber was utilized as the gain medium to achieve $\sim 1.9\mathrm{mW}$ laser output. The single longitudinal mode operation of this laser was verified by a scanning Fabry–Perot interferometer. This fiber laser is suited for seeding high-power 930 nm narrow-linewidth laser amplifiers, which can be used to generate coherent single-frequency pure blue light through frequency doubling.

© 2016 Optical Society of America

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