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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 28 — Oct. 1, 2008
  • pp: 5229–5234

Signal enhancement of surface plasmon-coupled directional emission by a conical mirror

Derek S. Smith, Yordan Kostov, and Govind Rao  »View Author Affiliations


Applied Optics, Vol. 47, Issue 28, pp. 5229-5234 (2008)
http://dx.doi.org/10.1364/AO.47.005229


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Abstract

A simple strategy for increasing the collection efficiency of surface plasmon-coupled emission (SPCE) is demonstrated. SPCE is a near-field phenomenon occurring when excited fluorophores are in close proximity to a subwavelength metal film. The energy of the fluorophores induces surface plasmons that radiate the coupled energy at highly specific angles. In an attempt to maximize the collected emission, a conical mirror was placed around the coupling prism. The result was a nearly 500 fold enhancement over the free space signal as detected from a single point from a poly(vinyl alcohol) layer doped with ruthenium. Coupling this large enhancement with LED excitation could lead to the development of inexpensive, handheld fluorescent devices with high sensitivity.

© 2008 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(240.0310) Optics at surfaces : Thin films
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Spectroscopy

History
Original Manuscript: April 10, 2008
Revised Manuscript: August 11, 2008
Manuscript Accepted: August 11, 2008
Published: September 30, 2008

Virtual Issues
Vol. 3, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Derek S. Smith, Yordan Kostov, and Govind Rao, "Signal enhancement of surface plasmon-coupled directional emission by a conical mirror," Appl. Opt. 47, 5229-5234 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-28-5229

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