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Angular surface solitons in sectorial hexagonal arrays.

A Szameit1, Y V Kartashov, V A Vysloukh

  • 1Institute of Applied Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany. szameit@iap.uni-jena.de

Optics Letters
|July 3, 2008
PubMed
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We observed novel corner surface solitons in hexagonal waveguide arrays. The angle between interfaces significantly affects soliton behavior, influencing excitation thresholds and light spreading.

Area of Science:

  • Nonlinear optics
  • Waveguide optics

Background:

  • Surface solitons are localized light structures at interfaces.
  • Hexagonal waveguide arrays offer unique geometries for light propagation.

Purpose of the Study:

  • To experimentally observe corner surface solitons.
  • To investigate the influence of interface geometry on soliton properties.

Main Methods:

  • Fabrication of hexagonal waveguide arrays.
  • Experimental excitation and observation of solitons using a uniform nonlinear medium.
  • Analysis of light propagation and diffraction patterns.

Main Results:

  • Successful experimental observation of corner surface solitons.
  • Demonstration that the face angle critically impacts soliton excitation thresholds.

Related Experiment Videos

  • Quantification of the effect of the face angle on light energy drift and diffraction spreading.

    • Conclusions:

    • Corner surface solitons can be localized at specific interfaces in hexagonal arrays.
    • The geometry of the interfaces is a key parameter in controlling nonlinear light localization and propagation.