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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 19 — Oct. 1, 2010
  • pp: 3213–3215

Focusing-to-defocusing crossover in nonlinear periodic structures

Francis H. Bennet, Inés A. Amuli, Andrey A. Sukhorukov, Wieslaw Krolikowski, Dragomir N. Neshev, and Yuri S. Kivshar  »View Author Affiliations


Optics Letters, Vol. 35, Issue 19, pp. 3213-3215 (2010)
http://dx.doi.org/10.1364/OL.35.003213


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Abstract

We demonstrate experimentally a transition from nonlinear beam trapping to defocusing in a two-dimensional periodic photonic structures by varying the modulation depth of the lattice. The observed effect illustrates the fundamental crossover from discrete to cw transport mechanisms. At the threshold modulation, the output beam is highly sensitive to refractive index and power variations, which can be potentially applied for high-sensitivity refractive index or temperature sensing.

© 2010 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.5940) Nonlinear optics : Self-action effects
(190.6135) Nonlinear optics : Spatial solitons

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 25, 2010
Manuscript Accepted: August 25, 2010
Published: September 22, 2010

Citation
Francis H. Bennet, Inés A. Amuli, Andrey A. Sukhorukov, Wieslaw Krolikowski, Dragomir N. Neshev, and Yuri S. Kivshar, "Focusing-to-defocusing crossover in nonlinear periodic structures," Opt. Lett. 35, 3213-3215 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-19-3213

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