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 journalArticle

84 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 languageEnglish
Pages (from-to)3608-3611
Number of pages4
JournalNano Letters
Volume9
Issue number10
DOIs
Publication statusPublished - 14 Oct 2009
Externally publishedYes

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    Volpe, G., Cherukulappurath, S., Parramon, R. J., Molina-Terriza, G., & Quidant, R. (2009). Controlling the optical near field of nanoantennas with spatial phase-shaped beams. Nano Letters, 9(10), 3608-3611. https://doi.org/10.1021/nl901821s