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Related Experiment Videos

Second-harmonic superprism effect in photonic crystals.

Emmanuel Centeno1

  • 1Groupe d'Etude des Semiconducteurs, Unité Mixte de Recherche-Centre National de la Recherche Scientifique 5650, Université Montpellier II, Place E. Bataillon, CC074, 34095 Montpellier, France. centeno@ges.univ-montp2.fr

Optics Letters
|May 24, 2005
PubMed
Summary

Researchers demonstrated a second-harmonic superprism effect using two-dimensional photonic crystals. This nonlinear optical effect allows precise control over the second-harmonic emission direction by tuning the fundamental wavelength or incidence angle.

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Area of Science:

  • Nonlinear optics
  • Photonics
  • Materials science

Background:

  • Two-dimensional photonic crystals exhibit unique optical properties due to their periodic nanostructures.
  • Nonlinear optical phenomena are crucial for developing advanced photonic devices.
  • The superprism effect, typically observed in diffraction gratings, offers angular dispersion capabilities.

Purpose of the Study:

  • To demonstrate and investigate a second-harmonic superprism effect in two-dimensional photonic crystals.
  • To explore the control of second-harmonic emission direction using nonlinear optical properties.
  • To analyze the influence of fundamental wavelength and incidence angle on the superprism effect.

Main Methods:

  • Exploitation of nonlinear optical properties of two-dimensional photonic crystals.

Related Experiment Videos

  • Utilizing the anisotropic dispersion curves inherent to the photonic crystal structure.
  • Systematic variation of the fundamental wavelength and angle of incidence.

    • Main Results:

    • Successful demonstration of a second-harmonic superprism effect.
    • Control over the propagation direction of the second-harmonic field was achieved.
    • Significant angular shifts in second-harmonic emission were observed with smooth changes in input parameters.

    Conclusions:

    • Two-dimensional photonic crystals are effective platforms for realizing nonlinear optical superprism effects.
    • The demonstrated effect offers a novel method for angular control of nonlinear optical signals.
    • This research opens possibilities for tunable wavelength conversion and beam steering applications.