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Proceedings Paper

Visualization of surface electromagnetic waves in one-dimensional photonic crystal by fluorescence dye
Author(s): I. V. Soboleva; E. Descrovi; L. Dominici; F. Michelotti; F. Giorgis; A. A. Fedyanin
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Paper Abstract

The Rhodamine 6G fluorescence enhanced by the surface electromagnetic waves coupled on surface of 1D photonic crystals is studied. The fluorescence-mediated surface electromagnetic waves (SEW) distribution is visualized by means of far-field fluorescence microscopy. The kinetics of Rhodamine 6G bleaching due to SEW is studied. The way of SEW visualization in reflectivity spectra via fluorescence process is shown. The prospective for SEW application in the optical sensors field is tested via direct spectroscopy of the photonic crystal covered by the ethanol and R6G thin film. Spectral flexibility of the SEW excitation depending on the effective photonic crystal dispersion controlled by its design rather than on material dispersion opens prospectives for the application of SEW-enhanced fluorescence microscopy in biocensing with increased spatial and concentration sensitivity and spectral selectivity.

Paper Details

Date Published: 18 May 2009
PDF: 8 pages
Proc. SPIE 7356, Optical Sensors 2009, 73560E (18 May 2009); doi: 10.1117/12.820711
Show Author Affiliations
I. V. Soboleva, Lomonosov Moscow State Univ. (Russian Federation)
E. Descrovi, Politecnico di Torino (Italy)
L. Dominici, Univ. degli Studi di Roma, La Sapienza (Italy)
F. Michelotti, Univ. degli Studi di Roma, La Sapienza (Italy)
F. Giorgis, Politecnico di Torino (Italy)
A. A. Fedyanin, Lomonosov Moscow State Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 7356:
Optical Sensors 2009
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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