Investigating the optical properties of nanogap optical antennas

  • Ludivine Emeric
  • , Claire Deeb
  • , Alan Durnez
  • , Nathalie Bardou
  • , Riad Haïdar
  • , Fabrice Pardo
  • , Jean Luc Pelouard

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We investigate the optical properties of nanogap MIM nanoantennas with a 2.1 nm thick gap. These plasmonic nanoantennas consist of a gold film, an insulating layer deposited by Atomic Layer Deposition, and a periodically structured gold layer. MIM nanoantennas are characterized by a tunable spectral response and a high field confinement within the nanogap. Nanometric gaps enable high coupling between the plasmons of the top and bottom metal surfaces. We demonstrated an excellent agreement between optical measurements and classical electromagnetic simulations. In particular, we observed a fluctuation in the gap thickness of 0.2 nm.

Original languageEnglish
Title of host publicationNanophotonics VII
EditorsDavid L. Andrews, Andreas Ostendorf, Angus J. Bain, Jean-Michel Nunzi
PublisherSPIE
ISBN (Electronic)9781510618701
DOIs
Publication statusPublished - 1 Jan 2018
Externally publishedYes
EventNanophotonics VII 2018 - Strasbourg, France
Duration: 22 Apr 201826 Apr 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10672
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanophotonics VII 2018
Country/TerritoryFrance
CityStrasbourg
Period22/04/1826/04/18

Keywords

  • Extreme coupling
  • MIM
  • Nanogap antenna
  • Nanostructure
  • Plasmonics

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