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Related Experiment Videos

Perfect corner reflector.

Sébastien Guenneau1, Boris Gralak, J B Pendry

  • 1Department of Physics, Imperial College, Prince Consort Road, London SW7 2AZ, UK. guenneau@liverpool.ac.uk

Optics Letters
|June 10, 2005
PubMed
Summary
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This study reveals how negative index materials in a perfect lens create a cavity that traps light. The field oscillations depend on material absorption, showing infinite states as absorption nears zero.

Area of Science:

  • Electromagnetism
  • Metamaterials
  • Optics

Background:

  • Perfect lenses utilize negative index materials to manipulate electromagnetic fields.
  • Understanding light behavior in such structures is crucial for optical device development.

Purpose of the Study:

  • To numerically investigate electromagnetic field propagation within a perfect lens composed of orthogonal positive and negative index media.
  • To analyze light trapping phenomena and field oscillation characteristics.

Main Methods:

  • Employing a coordinate transformation technique for rigorous vector field calculation.
  • Utilizing a transfer-matrix method adapted for the specific lens geometry.

Main Results:

  • Identified that two negative corners form a cavity, trapping light along closed trajectories.

Related Experiment Videos

  • Observed spatial oscillations in the electromagnetic field.
  • Determined oscillation period is proportional to 1/ln(sigma), where sigma is absorption.
  • Found an associated infinite density of states as absorption approaches zero.

    • Conclusions:

    • The unique geometry of the perfect lens with negative index media facilitates light trapping.
    • Field behavior is sensitive to material absorption, with implications for low-loss optical systems.
    • The study highlights the potential for novel optical phenomena in metamaterials.