Toward more coherent sources using a microstructured chalcogenide brillouin fiber laser

  • Tow K
  • Léguillon Y
  • Fresnel S
 et al. 
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Abstract

Up to 16 dB frequency noise reduction and a linewidth 8 times narrower that of the pump source is reported for the Stokes component in a compact Brillouin fiber laser made of chalcogenide microstructured fiber. Since the pump wave is not resonant in the ring cavity, an active stabilization of the laser is not primordial thus making the system simpler and cheaper. Although only a 3 metre-long microstructured chalcogenide fiber was used as gain medium, a very low laser threshold power of 6 mW was obtained for nonresonant pumping. The linewidth-narrowing effect achieved in our BFL cavity is also discussed.

Author-supplied keywords

  • Brillouin fiber lasers (BFLs)
  • chalcogenide optical fiber
  • frequency noise
  • linewidth
  • microstructured optical fibers

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