University of Illinois Urbana-Champaign

Nonlinear Fourier-transform Spectroscopy Of Single Gold Nanoparticles

Steves, Megan A.

Content Files
5530.pdf
TD07_5530.pdf

Permalink

https://hdl.handle.net/2142/111321

Description

Title
Nonlinear Fourier-transform Spectroscopy Of Single Gold Nanoparticles
Author(s)
Steves, Megan A.
Contributor(s)
Knappenberger, Jr., Kenneth L.
Issue Date
2021-06-22
Keyword(s)
Fundamental interest
Date of Ingest
  • 2021-09-24T21:09:31Z
  • 2022-01-21T16:08:54Z
Abstract
Plasmonic metal nanoparticles exhibit strong and tunable light-matter interactions which have enabled a variety of applications. Alongside their strong linear extinction, plasmonic nanoparticles have also been noted for their nonlinear optical properties. Here we present a study of multiphoton absorption in plasmonic gold nanorods using Fourier-transform spectroscopy with nonlinear optical detection. The excitation spectra of single gold nanorods is retrieved from an interferometric multiphoton photoluminescence (MPPL) signal which is generated by a pair of phase-locked pulses with attosecond interpulse delay precision. The resulting Fourier-transform spectra reveal the two- and three-photon excitation pathways that lead to emission from gold nanorods. Investigation of the spectra demonstrates the connection between resonance frequency and nonlinear absorption cross-section in gold nanorods, which is attributed to the influence of gold’s electronic structure.\footnote{This work was supported by the Air Force Office of Scientific Research, grant number FA-9550-18-1-0347, the National Science Foundation Graduate Research Fellowship Program under grant no. DGE1255832 and the National Science Foundation, award number CHE-1807999}
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
Text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/111321
DOI
10.15278/isms.2021.TD07

Owning Collections

Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy PRIMARY