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Optics Letters

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  • Vol. 29, Iss. 17 — Sep. 1, 2004
  • pp: 1989–1991

Enhanced two-photon fluorescence excitation by resonant grating waveguide structures

S. Soria, T. Katchalski, E. Teitelbaum, A. A. Friesem, and G. Marowsky  »View Author Affiliations


Optics Letters, Vol. 29, Issue 17, pp. 1989-1991 (2004)
http://dx.doi.org/10.1364/OL.29.001989


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Abstract

Enhanced two-photon fluorescence (TPF) spectroscopy with novel high-finesse resonant polymeric grating waveguide structures (GWSs) is presented. Under resonant conditions the field enhancement at the surface of a GWS can be exploited for TPF spectroscopy without the need for highly focused laser excitation light. We compare the TPF obtained by placing a drop of tetramethylrhodamine (TMR) on top of a GWS with that obtained with TMR on top of a glass substrate. Our procedure and results indicate that the detection of TPF can be improved by a factor of 10 with resonant GWSs.

© 2004 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(300.2530) Spectroscopy : Fluorescence, laser-induced

Citation
S. Soria, T. Katchalski, E. Teitelbaum, A. A. Friesem, and G. Marowsky, "Enhanced two-photon fluorescence excitation by resonant grating waveguide structures," Opt. Lett. 29, 1989-1991 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-17-1989


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