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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Published on: September 26, 2014

Perfect imaging through a disordered waveguide lattice.

Robert Keil1, Yoav Lahini, Yoav Shechtman

  • 1Institute of Applied Physics, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany.

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|March 2, 2012
PubMed
Summary
This summary is machine-generated.

Perfect imaging is achievable in disordered wave guiding systems with off-diagonal disorder. However, on-diagonal disorder or Kerr nonlinearity prevents perfect imaging in these systems.

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Area of Science:

  • Wave phenomena
  • Condensed matter physics
  • Photonics

Background:

  • Disordered systems present challenges for wave propagation and imaging.
  • Perfect imaging requires precise control over wave manipulation.
  • Lattice-based wave guiding structures are crucial in various optical applications.

Purpose of the Study:

  • To investigate the conditions for achieving perfect imaging in disordered wave guiding media.
  • To determine the impact of different types of disorder on imaging capabilities.
  • To explore the role of nonlinearity in wave guiding systems.

Main Methods:

  • Experimental demonstration of wave propagation in disordered lattices.
  • Analysis of off-diagonal disorder (random spacing) in lattice sites.
  • Assessment of on-diagonal disorder (site properties) and Kerr nonlinearity effects.

Main Results:

  • Perfect imaging was experimentally achieved when disorder was exclusively off-diagonal.
  • Random variations in spacing between identical lattice sites enabled perfect imaging.
  • On-diagonal disorder and Kerr nonlinearity were found to disrupt and destroy the imaging process.

Conclusions:

  • Off-diagonal disorder is a critical factor enabling perfect imaging in wave guides.
  • The type of disorder significantly influences the feasibility of perfect imaging.
  • Nonlinearity and on-diagonal disorder are detrimental to achieving perfect imaging in these systems.