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Related Experiment Videos

Parametric localized modes in quadratic nonlinear photonic structures.

A A Sukhorukov1, Y S Kivshar, O Bang

  • 1Optical Sciences Centre, Australian National University, Canberra ACT 0200, Australia.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|April 17, 2001
PubMed
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We investigated nonlinear optical modes in quadratic nonlinear photonic crystals. Our research identified discrete gap solitons and localized modes at nonlinear interfaces, offering insights into light propagation in layered optical materials.

Area of Science:

  • Nonlinear optics
  • Condensed matter physics
  • Photonics

Background:

  • Quadratic nonlinear optical materials support unique light interactions.
  • Parametric coupling between fundamental and second-harmonic fields is crucial.
  • Layered structures like photonic crystals enable novel optical phenomena.

Purpose of the Study:

  • Analyze two-color spatially localized nonlinear modes.
  • Investigate these modes at quadratic nonlinear interfaces within layered structures.
  • Characterize discrete gap solitons and localized modes.

Main Methods:

  • Derivation of an effective discrete model (discrete chi(2) equations).
  • Numerical and analytical investigation of spatially localized solutions.
  • Study of localized modes at single nonlinear interfaces in linear superlattices.

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Main Results:

  • Identification of discrete gap solitons in periodic nonlinear lattices.
  • Characterization of two-color localized modes at single nonlinear interfaces.
  • Comparison of localized modes in layered structures with solitons in homogeneous media.

Conclusions:

  • Discrete chi(2) equations effectively model localized nonlinear modes.
  • Localized modes exhibit distinct properties in layered photonic structures.
  • The study advances understanding of nonlinear light propagation in engineered optical materials.