Extraordinary nonlinear absorption in 3D bowtie nanoantennas

Jae Yong Suh, Mark D. Huntington, Chul Hoon Kim, Wei Zhou, Michael R Wasielewski, Teri W Odom

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

This paper reports that arrays of three-dimensional (3D), bowtie-shaped Au nanoparticle dimers can exhibit extremely high nonlinear absorption. Near-field interactions across the gap of the 3D bowties at the localized surface plasmon resonance wavelengths resulted in an increase of more than 4 orders of magnitude in local field intensity. The imaginary part of the third-order nonlinear susceptibility (Im π (3)) for the 3D bowtie arrays embedded in a dielectric material was measured to be 10 -4 esu, more than 2 orders of magnitude higher than reported for other metal nanoparticle-dielectric composites. Moreover, 3D dimers with increased nanoscale structure (such as folding) exhibited increased optical nonlinearity. These 3D nanoantennas can be used as critical elements for nanoscale nonlinear optical devices.

Original languageEnglish
Pages (from-to)269-274
Number of pages6
JournalNano Letters
Volume12
Issue number1
DOIs
Publication statusPublished - Jan 11 2012

Fingerprint

Dimers
dimers
nanoparticles
Metal nanoparticles
Surface plasmon resonance
Optical devices
surface plasmon resonance
folding
near fields
nonlinearity
Nanoparticles
magnetic permeability
Wavelength
composite materials
Composite materials
wavelengths
metals
interactions
Nanoantennas

Keywords

  • local field enhancement
  • localized surface plasmons
  • nonlinear optical susceptibility
  • Optical nanoantenna
  • plasmon hybridization

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Extraordinary nonlinear absorption in 3D bowtie nanoantennas. / Suh, Jae Yong; Huntington, Mark D.; Kim, Chul Hoon; Zhou, Wei; Wasielewski, Michael R; Odom, Teri W.

In: Nano Letters, Vol. 12, No. 1, 11.01.2012, p. 269-274.

Research output: Contribution to journalArticle

Suh, Jae Yong ; Huntington, Mark D. ; Kim, Chul Hoon ; Zhou, Wei ; Wasielewski, Michael R ; Odom, Teri W. / Extraordinary nonlinear absorption in 3D bowtie nanoantennas. In: Nano Letters. 2012 ; Vol. 12, No. 1. pp. 269-274.
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