Spectral dependence of subwavelength slit geometry

Heath Gemar, Michael Yetzbacher, Ronald Driggers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


For two decades, extraordinary optical transmission (EOT) has amplified exploration into subwavelength systems. Researchers have previously suggested exploiting the spectrally selective electromagnetic field confinement of subwavelength slits for multispectral detectors. Utilizing the finite-difference frequency domain (FDFD) method, we examine electromagnetic field confinement in both 2-dimensional and 3-dimensional scenarios from 2.5 to 6 microns, i.e. midwave infrared (MWIR). We explore the trade space of deep subwavelength slits and its impact on resonant enhancement of the electromagnetic field. This builds fundamental understanding of the coupling mechanisms allowing for prediction of resonant spectral behavior based on slit geometry and material properties.

Original languageEnglish (US)
Title of host publicationNext-Generation Spectroscopic Technologies XIII
EditorsLuisa T. M. Profeta, Abul K. Azad, Steven M. Barnett
ISBN (Electronic)9781510635579
StatePublished - 2020
Externally publishedYes
EventNext-Generation Spectroscopic Technologies XIII 2020 - None, United States
Duration: Apr 27 2020May 8 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceNext-Generation Spectroscopic Technologies XIII 2020
Country/TerritoryUnited States


  • Apertures
  • Infrared systems
  • MWIR
  • Spectral Domain
  • Subwavelength

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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