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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 10 — Oct. 1, 2013
  • pp: 2743–2757

Mid-infrared supercontinuum generation to 4.5  μm in uniform and tapered ZBLAN step-index fibers by direct pumping at 1064 or 1550  nm

Irnis Kubat, Christian S. Agger, Peter Morten Moselund, and Ole Bang  »View Author Affiliations


JOSA B, Vol. 30, Issue 10, pp. 2743-2757 (2013)
http://dx.doi.org/10.1364/JOSAB.30.002743


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Abstract

We present a numerical design optimization of step-index ZBLAN fibers for developing mid-infrared (IR) supercontinuum sources with spectra covering the 1–4.5 μm regime using direct pumping with 10 ps pulses (FWHM) from mode-locked Yb (12.5 kW peak power) and Er lasers (10 kW peak power). Even with optimum NA and core diameter to minimize confinement loss and give the most suitable dispersion and nonlinearity, the Yb pump-laser cannot push the spectrum beyond 1.52 μm, whereas the Er laser can push the spectrum to 4.15 μm. We further consider the optimum placement of a 20 cm taper to broaden the spectrum. This does not considerably broaden the Yb-pumped spectrum, whereas the Er-pumped spectrum can be extended to 4.5 μm through mid-IR dispersive waves and tunneling solitons.

© 2013 Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(190.0190) Nonlinear optics : Nonlinear optics
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

History
Original Manuscript: June 19, 2013
Revised Manuscript: August 29, 2013
Manuscript Accepted: August 29, 2013
Published: September 30, 2013

Citation
Irnis Kubat, Christian S. Agger, Peter Morten Moselund, and Ole Bang, "Mid-infrared supercontinuum generation to 4.5  μm in uniform and tapered ZBLAN step-index fibers by direct pumping at 1064 or 1550  nm," J. Opt. Soc. Am. B 30, 2743-2757 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-10-2743

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