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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 34 — Dec. 1, 2003
  • pp: 6905–6909

Silicon-based surface plasmon resonance sensing with two surface plasmon polariton modes

Sergiy Patskovsky, Andrei V. Kabashin, Michel Meunier, and John H. T. Luong  »View Author Affiliations


Applied Optics, Vol. 42, Issue 34, pp. 6905-6909 (2003)
http://dx.doi.org/10.1364/AO.42.006905


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Abstract

Surface plasmon resonance (SPR) sensing on a silicon-based platform is considered. We have studied properties of SPR in a combined silicon-dielectric layer-gold film-sample medium structure and established conditions of the simultaneous excitation of two plasmon polariton modes that provide narrow and well-separated minima of the reflected intensity. It has been shown that the external mode over the gold-sample medium interface demonstrates a highly sensitive response to a change in the refractive index of the sample medium, whereas the internal mode over the dielectric-gold interface is almost insensitive to medium parameters. We propose that the internal mode can be used as an effective reference zero point for miniature and portable SPR-based systems designed for field and multichannel sensing.

© 2003 Optical Society of America

OCIS Codes
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(240.6680) Optics at surfaces : Surface plasmons
(310.6860) Thin films : Thin films, optical properties

History
Original Manuscript: April 2, 2003
Revised Manuscript: September 2, 2003
Published: December 1, 2003

Citation
Sergiy Patskovsky, Andrei V. Kabashin, Michel Meunier, and John H. T. Luong, "Silicon-based surface plasmon resonance sensing with two surface plasmon polariton modes," Appl. Opt. 42, 6905-6909 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-34-6905

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