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Related Experiment Videos

Metallic inductive and capacitive grids: theory and experiment.

B K Minhas1, W Fan, K Agi

  • 1Center for High Technology Materials, Albuquerque, New Mexico 87106, USA.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|July 4, 2002
PubMed
Summary
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We explored capacitive and inductive metallic gratings in the mid-infrared. Both grating types exhibit behavior described by coupling incident light into surface plasma waves.

Area of Science:

  • Optics and Photonics
  • Plasmonics
  • Nanophotonics

Background:

  • Metallic gratings are crucial optical components.
  • Understanding their interaction with light is essential for device development.

Purpose of the Study:

  • To theoretically model and experimentally validate capacitive (dot) and inductive (hole) metallic crossed gratings.
  • To investigate the optical properties of these gratings in the mid-infrared spectrum.

Main Methods:

  • Fabrication using interferometric lithography.
  • Modeling using rigorous coupled-wave analysis (RCWA).
  • Experimental characterization of transmittance spectra.

Main Results:

  • Demonstrated theoretical and experimental agreement for both grating types.

Related Experiment Videos

  • Observed that capacitive gratings, similar to inductive grids, support surface plasma waves.
  • Identified coupling of incident light into surface plasma waves as the dominant mechanism.

    • Conclusions:

    • Capacitive and inductive metallic gratings exhibit similar light-coupling behaviors.
    • Surface plasma wave excitation is a key phenomenon in these mid-infrared nanostructures.
    • The findings contribute to the understanding and design of plasmonic devices.