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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 14 — Jul. 15, 2011
  • pp: 2641–2643

Acoustically segmented photonic crystal fiber for single-frequency high-power laser applications

Craig Robin and Iyad Dajani  »View Author Affiliations

Optics Letters, Vol. 36, Issue 14, pp. 2641-2643 (2011)

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The Brillouin gain characteristics of a Yb-doped polarization-maintaining photonic crystal fiber possessing a segmented acoustic profile are investigated using a pump–probe technique. The concentrations of fluorine, aluminum, and germanium in two regions of the core were selected, such that the corresponding Brillouin shifts were sufficiently separated to allow for the introduction of a temperature profile along the fiber for further stimulated Brillouin scattering suppression. By using a cutback technique to measure loss, we estimated the Brillouin gain coefficient to be 1.2 × 10 11 m / W . Despite differences in the concentration levels of dopants between the two segments, there was no evidence of a development of an optical interface. When this fiber was utilized in a counterpumped amplifier configuration, close to 500 W of near-diffraction-limited single-frequency output was obtained.

© 2011 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(290.5900) Scattering : Scattering, stimulated Brillouin
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 13, 2011
Revised Manuscript: May 18, 2011
Manuscript Accepted: May 31, 2011
Published: July 13, 2011

Craig Robin and Iyad Dajani, "Acoustically segmented photonic crystal fiber for single-frequency high-power laser applications," Opt. Lett. 36, 2641-2643 (2011)

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