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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. 31, Iss. 3 — Mar. 1, 2014
  • pp: 450–457

Nonlinear characterization of robust multimaterial chalcogenide nanotapers for infrared supercontinuum generation

Soroush Shabahang, Guangming Tao, Michael P. Marquez, Honghua Hu, Trenton R. Ensley, Peter J. Delfyett, and Ayman F. Abouraddy  »View Author Affiliations


JOSA B, Vol. 31, Issue 3, pp. 450-457 (2014)
http://dx.doi.org/10.1364/JOSAB.31.000450


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Abstract

We present the results of an investigation of the nonlinear characteristics of a new class of robust, multimaterial, all-solid chalcogenide nanotapers prepared from high-index-contrast chalcogenide fibers. The fiber is drawn from a preform produced by multimaterial coextrusion and consists of chalcogenide core and cladding (which dictate the optical properties) and a built-in thermally compatible polymer jacket that provides mechanical stability to the fibers and nanotapers. We measure the nonlinear refractive indices both in the bulk chalcogenide glasses using the Z-scan method and directly in the nanotapers from spectral broadening resulting from self-phase modulation using both picosecond and femtosecond pulses. Such robust nanotapers offer many opportunities for dispersion engineering to optimize nonlinear optical fiber applications such as infrared supercontinuum generation. Low-power femtosecond pulses (100W peak power, corresponding to 40pJ energy per pulse) centered at 1.55 μm wavelength launched into the nanotapers generated a supercontinuum extending over a full spectral octave, 1–2 μm. A computational model that takes into account the relevant linear and nonlinear optical parameters provides simulations that are in good agreement with the supercontinuum measurements.

© 2014 Optical Society of America

OCIS Codes
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

History
Original Manuscript: October 3, 2013
Manuscript Accepted: November 19, 2013
Published: February 10, 2014

Virtual Issues
Vol. 9, Iss. 5 Virtual Journal for Biomedical Optics
March 4, 2014 Spotlight on Optics

Citation
Soroush Shabahang, Guangming Tao, Michael P. Marquez, Honghua Hu, Trenton R. Ensley, Peter J. Delfyett, and Ayman F. Abouraddy, "Nonlinear characterization of robust multimaterial chalcogenide nanotapers for infrared supercontinuum generation," J. Opt. Soc. Am. B 31, 450-457 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-3-450


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