Bloch mode analysis of transmission through periodic slit arrays in finite thickness metallic slabs

Yong Xie, Armis R. Zakharian, Jerome V. Moloney, Masud Mansuripur

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

Abstract

The Bloch modes of a periodic slit array in a metallic slab are identified, then used to investigate the transmission of light through sub-wavelength slits residing in a finite-thickness slab. Specifically, the Bloch mode method is used here to study Fabry-Perot-like resonances within individual slits, in conjunction with the onset of surface plasmon polariton (SPP) resonances and in the vicinity of the Wood anomalies. Although the results largely agree with our earlier numerical simulations obtained with the Finite-Difference-Time-Domain (FDTD) method, there are indications that the FDTD method has difficulty with convergence at and around resonances; the points of agreement and disagreement between the two methods are discussed in the present paper. When the period p of the slit array is comparable to (or somewhat below) the incident wavelength λo, the Bloch mode method requires only the 10-20 lowest-order modes of the slit array to achieve stable solutions; we find the Bloch mode method to be an effective tool for studying dielectric-filled apertures in highly conductive hosts.

Original languageEnglish (US)
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties V
DOIs
StatePublished - Dec 1 2007
EventPlasmonics: Metallic Nanostructures and Their Optical Properties V - San Diego, CA, United States
Duration: Aug 26 2007Aug 29 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6641
ISSN (Print)0277-786X

Other

OtherPlasmonics: Metallic Nanostructures and Their Optical Properties V
CountryUnited States
CitySan Diego, CA
Period8/26/078/29/07

Keywords

  • Apertures
  • Diffraction theory
  • Guided waves
  • Optics of metals
  • Polaritons
  • Surface plasmons

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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  • Cite this

    Xie, Y., Zakharian, A. R., Moloney, J. V., & Mansuripur, M. (2007). Bloch mode analysis of transmission through periodic slit arrays in finite thickness metallic slabs. In Plasmonics: Metallic Nanostructures and Their Optical Properties V [66411S] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6641). https://doi.org/10.1117/12.733447