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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5852–5860

Coherent mid-infrared broadband continuum generation in non-uniform ZBLAN fiber taper

Zhigang Chen, Antoinette J. Taylor, and Anatoly Efimov  »View Author Affiliations

Optics Express, Vol. 17, Issue 7, pp. 5852-5860 (2009)

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A simple method is described for efficient, asymmetric and coherent continuum generation in the mid-infrared region based on the dynamics of a stabilized soliton in the vicinity of a second dispersion zero of a nonlinear fiber. The mechanism involves nonlinear soliton compression, Raman self-frequency shift and resonant emission of a dispersive (Cherenkov) wave in a non-uniformly tapered ZBLAN fluoride fiber pumped by a low-power compact femtosecond laser at 1.55 μm. The fiber taper features a continuous shift of the second zero dispersion wavelength, which facilitates the progressive shift in the wavelength of the dispersive wave generated by the stabilized soliton. Numerical solution of the generalized nonlinear Schrödinger equation, which accounts for the exact wavelength dependence of dispersion and nonlinear coefficients, shows robust generation of near-octave continuum spanning 1.5–3 μm wavelength range.

© 2009 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

Original Manuscript: February 6, 2009
Revised Manuscript: March 23, 2009
Manuscript Accepted: March 23, 2009
Published: March 26, 2009

Zhigang Chen, Antoinette J. Taylor, and Anatoly Efimov, "Coherent mid-infrared broadband continuum generation in non-uniform ZBLAN fiber taper," Opt. Express 17, 5852-5860 (2009)

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