We show how resonant single and double grating-waveguide-structures enhance two-photon fluorescence more than two orders of magnitude without the need for highly focused laser excitation light. Such resonant devices have an enormous potential for biosensing.
© 2005 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(320.0320) Ultrafast optics : Ultrafast optics
(320.2250) Ultrafast optics : Femtosecond phenomena
S. Soria, A. Thayil, G. Badenes, T. Katchalski, A. A. Friesem, A. Selle, M. A. Bader, and G. Marowsky, "Two-Photon Fluorescence Spectroscopy by Resonant Single and Double Grating Waveguide Structures," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper CTuH2.
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