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Plasmonic axicon micro-lenses for chemical sensing

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Abstract

We report on the fabrication of plasmonic hybrid sensors made of a micro-axicon dielectric lens and a single metallic nanoparticle. The dielectric lens produces a Bessel-like beam of light at its apex under plane wave excitation confining light in a narrow and intense beam with a low divergence. This Bessel-like beam can be used to optimize efficiently the excitation of a plasmonic nano-object and the collection of its far-field collected signal. This hybrid structure using the optical properties of a single metallic nanoparticle can act as a highly sensitive nanosensor.
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Dates and versions

hal-02518806 , version 1 (25-03-2020)

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  • HAL Id : hal-02518806 , version 1

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Julien Proust, Jérôme Martin, Davy Gérard, Jean-Louis Bijeon, Jerome Plain. Plasmonic axicon micro-lenses for chemical sensing. NFO12, Sep 2012, San Sebastián, Spain. ⟨hal-02518806⟩

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