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Discriminating between Coherent and Incoherent Light with Planar Metamaterials.

T Frank1,2, O Buchnev2,3, T Cookson1

  • 1Physics and Astronomy , University of Southampton , Southampton SO17 1BJ , U.K.

Nano Letters
|September 20, 2019
PubMed
Summary
This summary is machine-generated.

Planar metamaterials made of nanopatterned metal films can distinguish between coherent and incoherent light. This novel effect offers new possibilities for nanoscale optical devices.

Keywords:
metamaterialsmetasurfacesoptical nonlocalityplasmonsspatial coherence

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Area of Science:

  • Optical Engineering
  • Nanotechnology
  • Materials Science

Background:

  • Planar metamaterials offer advanced control over light at structured interfaces without high-order diffraction.
  • Natural optical materials lack the ability to differentiate light based on spatial coherence.

Purpose of the Study:

  • To investigate the differential response of specific planar metamaterials to coherent versus incoherent light.
  • To explore the potential of this phenomenon for novel optical applications.

Main Methods:

  • Fabrication of planar metamaterials using nanopatterned metal films.
  • Experimental characterization of material response to spatially coherent and incoherent light sources.

Main Results:

  • Demonstrated that certain planar metamaterials exhibit distinct responses to coherent and incoherent light.
  • Achieved robust speckle-free discrimination of light coherence degrees.

Conclusions:

  • The discovered effect in planar metamaterials is unique and has no parallel in natural materials.
  • Potential applications include advanced nanoscale metadevices for imaging, vision, detection, communication, and metrology.