Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 18, Issue 17-20, Pages 1813-1815Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2006.881145
Keywords
Brillouin scattering; fiber laser; frequency noise; intensity noise; laser linewidth; stabilization
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We demonstrate an all-fiber high-power single-frequency Brillouin fiber ring laser with maximum power of 100 mW at 1.55 mu m, which is actively stabilized by using the Pound-Drever-Hall frequency-locking scheme. Significant reduction (similar to 20 dB) of both relative intensity noise and frequency noise was observed in the Brillouin Stokes radiation as compared with those noises of its pump source, a narrow-linewidth Er-doped fiber laser. Ultranarrow spectral linewidth of the Brillouin fiber lasers was investigated by both delayed self-heterodyne technique and heterodyne beat technique between two independent Brillouin fiber lasers.
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