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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 1026–1029

Competition between stimulated Raman and Brillouin scattering processes in CF4 gas

Lior Ben Yehud, Daniel Belker, Gad Ravnitzki, and Amiel A. Ishaaya  »View Author Affiliations

Optics Letters, Vol. 39, Issue 4, pp. 1026-1029 (2014)

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CF4 gas has a relatively high Raman cross section and a relatively small Raman shift and is an excellent candidate for a gas-filled hollow-core photonic bandgap (HC-PBG) fiber Raman wavelength converter. Here we investigate experimentally the onset and competition between stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) processes in high-pressure CF4 gas. We focus 532 nm laser pulses into a high-pressure gas cell and measure the SBS and SRS response. The thresholds for both processes decrease with pressure, as expected. However, with short focusing geometries, the SBS threshold is lower than the SRS threshold, and with long focusing geometries, it is the opposite. We further show that with HC-PBG fiber geometry SRS dominates.

© 2014 Optical Society of America

OCIS Codes
(290.5900) Scattering : Scattering, stimulated Brillouin
(290.5910) Scattering : Scattering, stimulated Raman
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:

Original Manuscript: November 4, 2013
Revised Manuscript: December 24, 2013
Manuscript Accepted: January 10, 2014
Published: February 12, 2014

Lior Ben Yehud, Daniel Belker, Gad Ravnitzki, and Amiel A. Ishaaya, "Competition between stimulated Raman and Brillouin scattering processes in CF4 gas," Opt. Lett. 39, 1026-1029 (2014)

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