Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings

A. Szalai, G. Szekeres, J. Balázs, A. Somogyi, M. Csete

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

2 Citations (Scopus)

Abstract

Theoretical investigation of rotated grating coupling phenomenon was performed on a multilayer comprising 416-nmperiodic shallow rectangular polymer grating on bimetal film made of gold and silver layers. During the multilayer illumination by 532 nm wavelength p-polarized light the polar and azimuthal angles were varied. In presence of 0-35 nm, 0-50 nm and 15-50 nm thick polymer-layers at the valleys and hills splitting was observed on the dual-angle dependent reflectance in two regions: (i) close to 0°azimuthal angle corresponding to incidence plane parallel to the periodic pattern (P-orientation); and (ii) around ~33.5°/29°/30°azimuthal angle (C-orientation), in agreement with our previous experimental studies. The near-field study revealed that in P-orientation the E-field is enhanced at the glass side with p/2 periodicity at the first minimum appearing at 49°/50°/52°polar angles, and comprises maxima below both the valleys and hills; while E-field enhancement is observable both at the glass and polymer side with p-periodicity at the second minimum developing at 55°/63/64°tilting, comprising maxima intermittently below the valleys or above the hills. In Corientation coupled plasmonic modes are observable, involving modes propagating along the valleys at the secondary maxima appearing at ~35°/32°/32°azimuthal and ~49°/51°/56°polar angles, while modes confined along the polymer hills are observable at the primary minima, which are coupled most strongly at the ~31.5°/25°/ 28°azimuthal and ~55°/63°/66°polar angles. The secondary peak observable in C-orientation is proposed for biosensing applications, since the supported modes are confined along the valleys, where biomolecules prefer to attach.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume8809
ISBN (Print)9780819496591
DOIs
Publication statusPublished - 2013
EventPlasmonics: Metallic Nanostructures and Their Optical Properties XI - San Diego, CA, United States
Duration: Aug 25 2013Aug 29 2013

Other

OtherPlasmonics: Metallic Nanostructures and Their Optical Properties XI
CountryUnited States
CitySan Diego, CA
Period8/25/138/29/13

Fingerprint

Surface Plasmon
Surface plasmon resonance
surface plasmon resonance
Gratings
Polymers
gratings
Wavelength
Angle
valleys
wavelengths
Multilayers
Bimetals
Glass
polymers
Periodicity
Multilayer
Biomolecules
Light polarization
Corresponding angles
Silver

Keywords

  • angle
  • azimuthal
  • coupling
  • grating
  • multilayer
  • plasmon
  • polar
  • rotated

ASJC Scopus subject areas

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

Cite this

Szalai, A., Szekeres, G., Balázs, J., Somogyi, A., & Csete, M. (2013). Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8809). [88092U] SPIE. https://doi.org/10.1117/12.2024527

Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings. / Szalai, A.; Szekeres, G.; Balázs, J.; Somogyi, A.; Csete, M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8809 SPIE, 2013. 88092U.

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

Szalai, A, Szekeres, G, Balázs, J, Somogyi, A & Csete, M 2013, Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8809, 88092U, SPIE, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, San Diego, CA, United States, 8/25/13. https://doi.org/10.1117/12.2024527
Szalai A, Szekeres G, Balázs J, Somogyi A, Csete M. Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8809. SPIE. 2013. 88092U https://doi.org/10.1117/12.2024527
Szalai, A. ; Szekeres, G. ; Balázs, J. ; Somogyi, A. ; Csete, M. / Rotated grating coupled surface plasmon resonance on wavelength-scaled shallow rectangular gratings. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8809 SPIE, 2013.
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