Surface-plasmonic-polaritonic sensor using a dielectric columnar thin film

Stephen E. Swiontek, Akhlesh Lakhtakia

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

2 Scopus citations

Abstract

The propagation of a surface plasmon-polariton (SPP) wave can be guided by the interface of a metal and a columnar thin film (CTF). Theory predicts that the angle of incidence on the prism/metal interface in the Turbadar-Kretschmann- Raether prism-coupled configuration required to excite the SPP wave shifts upon infiltration of the CTF by a fluid. Otherwise identical CTFs of different thicknesses were partnered with dense thin films of aluminum in optical experiments. Regardless of the angle between the morphologically significant plane of the CTF and the cross-sectional plane of the prism, the angle of incidence for exciting the SPP wave was found to shift to a higher value when the CTF was infiltrated by a fluid of refractive index in excess of unity. Experimental data indicated that the angle between the morphologically significant plane of the CTF and the cross-sectional plane of the prism should not exceed about 45° for high sensitivity.

Original languageEnglish (US)
Title of host publicationNanostructured Thin Films VI
DOIs
StatePublished - Dec 1 2013
EventNanostructured Thin Films VI - San Diego, CA, United States
Duration: Aug 28 2013Aug 29 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8818
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherNanostructured Thin Films VI
CountryUnited States
CitySan Diego, CA
Period8/28/138/29/13

All Science Journal Classification (ASJC) codes

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

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