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Proceedings Paper

Sensitivity of (bio)-chemical sensors based on laser-excited surface plasmon resonance
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Paper Abstract

In this paper we analyze the effect of the laser beam divergence on the sensitivity of optical sensors based on surface plasmon resonance (SPR) using the Kretschmann configuration. The analysis is done by assuming that a Gaussian beam is employed. Numerical results are presented that show quantitatively the influence of the laser beam's waist on the SPR curve main characteristics. An example using the exact Fresnel coefficient, with optimal parameters reported in the literature is fully analyzed. Our results may be important in the design of SPR optical sensors using fiber or integrated optics.

Paper Details

Date Published: 2 September 1999
PDF: 7 pages
Proc. SPIE 3878, Miniaturized Systems with Micro-Optics and MEMS, (2 September 1999); doi: 10.1117/12.361280
Show Author Affiliations
Joel Villatoro, Case Western Reserve Univ. (Mexico)
Augusto Garcia-Valenzuela, Univ. Nacional Autonoma de Mexico (Mexico)


Published in SPIE Proceedings Vol. 3878:
Miniaturized Systems with Micro-Optics and MEMS
M. Edward Motamedi; Rolf Goering, Editor(s)

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