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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 5 — Mar. 6, 2006
  • pp: 1957–1964

Plasmonic field enhancement and SERS in the effective mode volume picture

Stefan A. Maier  »View Author Affiliations


Optics Express, Vol. 14, Issue 5, pp. 1957-1964 (2006)
http://dx.doi.org/10.1364/OE.14.001957


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Abstract

The controlled creation of nanometric electromag- netic field confinement via surface plasmon polariton excitations in metal/insulator/metal heterostructures is described via the concept of an effective electromagnetic mode volume Veff. Extensively used for the description of dielectric microcavities, its extension to plasmonics provides a convenient figure of merit and allows comparisons with dielectric counterparts. Using a one-dimensional analytical model and three-dimensional finite-difference time-domain simulations, it is shown that plasmonic cavities with nanometric dielectric gaps indeed allow for physical as well as effective mode volumes well below the diffraction limit in the gap material, despite significant energy penetration into the metal. In this picture, matter-plasmon interactions can be quantified in terms of quality factor Q and V eff , enabling a resonant cavity description of surface enhanced Raman scattering.

© 2006 Optical Society of America

OCIS Codes
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(230.5750) Optical devices : Resonators
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: January 3, 2006
Revised Manuscript: February 28, 2006
Manuscript Accepted: February 28, 2006
Published: March 6, 2006

Virtual Issues
Vol. 1, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Stefan A. Maier, "Plasmonic field enhancement and SERS in the effective mode volume picture," Opt. Express 14, 1957-1964 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-5-1957


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