Experimental characterization of dispersion in plasmonic nanostripes for integrated DNA sensing

Paul Steinvurzel; Tian Yang; Kenneth B. Crozier

doi:10.1117/12.842797

11 February 2010 Experimental characterization of dispersion in plasmonic nanostripes for integrated DNA sensing

Paul Steinvurzel, Tian Yang, Kenneth B. Crozier

Proceedings Volume 7604, Integrated Optics: Devices, Materials, and Technologies XIV; 760417 (2010) https://doi.org/10.1117/12.842797
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

Nanoscale metal stripes support plasmonic modes with strongly confined fields. When combined with a waveguide-coupled microfluidic system, these stripes can provide highly sub-wavelength excitation regions for single biomolecule sensing, e.g. dark-field fluorescence detection of tagged DNA. Using a prism coupled geometry, we experimentally characterize the dispersion of plasmon modes in 80-500 nm wide metal stripes. Our results agree well with numerical modeling. We investigate how the stripe morphology affects the mode distribution and dispersion, and consider the implications for integrated near field fluorescence excitation.

Citation Download Citation

Paul Steinvurzel, Tian Yang, and Kenneth B. Crozier "Experimental characterization of dispersion in plasmonic nanostripes for integrated DNA sensing", Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 760417 (11 February 2010); https://doi.org/10.1117/12.842797

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