Controlling the optical near field of nanoantennas with spatial phase-shaped beams

Giorgio Volpe; Sudhir Cherukulappurath; Roser Juanola Parramon; Gabriel Molina-Terriza; Romain Quidant

doi:10.1021/nl901821s

Controlling the optical near field of nanoantennas with spatial phase-shaped beams

Giorgio Volpe, Sudhir Cherukulappurath, Roser Juanola Parramon, Gabriel Molina-Terriza, Romain Quidant^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

94 Citations (Scopus)

Abstract

We report on a novel approach, based on sub-wavelength spatial phase variations at the focus of high-order beams, to reconfigure the optical near field distribution near plasmonic nanostructures. We first show how the introduction of phase jumps in the incident field driving a gap nanoantenna strongly affects its near field response. Beyond, we demonstrate the feasibility of exploiting this approach to selectively switch on and off hot-spots sites within a complex antenna architecture.

Original language	English
Pages (from-to)	3608-3611
Number of pages	4
Journal	Nano Letters
Volume	9
Issue number	10
DOIs	https://doi.org/10.1021/nl901821s
Publication status	Published - 14 Oct 2009
Externally published	Yes

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10.1021/nl901821s

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abstract = "We report on a novel approach, based on sub-wavelength spatial phase variations at the focus of high-order beams, to reconfigure the optical near field distribution near plasmonic nanostructures. We first show how the introduction of phase jumps in the incident field driving a gap nanoantenna strongly affects its near field response. Beyond, we demonstrate the feasibility of exploiting this approach to selectively switch on and off hot-spots sites within a complex antenna architecture.",

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AU - Parramon, Roser Juanola

AU - Molina-Terriza, Gabriel

AU - Quidant, Romain

PY - 2009/10/14

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AB - We report on a novel approach, based on sub-wavelength spatial phase variations at the focus of high-order beams, to reconfigure the optical near field distribution near plasmonic nanostructures. We first show how the introduction of phase jumps in the incident field driving a gap nanoantenna strongly affects its near field response. Beyond, we demonstrate the feasibility of exploiting this approach to selectively switch on and off hot-spots sites within a complex antenna architecture.

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Controlling the optical near field of nanoantennas with spatial phase-shaped beams

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