Second Harmonic Spectroscopy of Surface Lattice Resonances

David C. Hooper, Christian Kuppe, Danqing Wang, Weijia Wang, Jun Guan, Teri W Odom, Ventsislav K. Valev

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Because of their large figures of merit, surface lattice resonances (SLRs) in metal nanoparticle arrays are very promising for chemical and biomolecular sensing in both liquid and gas media. SLRs are sensitive to refractive index changes both near the surface of the nanoparticles (surface sensitivity) and in the volume between them (bulk sensitivity). Because of its intrinsic surface-sensitivity and a power law dependence on electric fields, second harmonic generation (SHG) spectroscopy can improve upon both the surface and volume sensitivities of SLRs. In this report on SHG spectroscopy of plasmonic nanoparticles, we show that the SHG signal is greatly increased (up to 450 times) by the SLRs. We also demonstrate very narrow resonances in SHG intensity (∼5 nm fwhm). We illustrate how the SHG resonances are highly sensitive to SLRs by varying the fundamental wavelength, angle of incidence, nanoparticle material, and lattice constant of the arrays. Finally, we identify an SHG resonance (10 nm fwhm) that is electric dipole forbidden and can be attributed to higher-order multipoles, enhanced by the strong near-fields of SLRs. Our results open up new and very promising avenues for chemical and biomolecular sensing based on SHG spectroscopy of SLRs.

Original languageEnglish
JournalNano Letters
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

Spectroscopy
Harmonic generation
harmonics
harmonic generations
spectroscopy
nanoparticles
Nanoparticles
sensitivity
Metal nanoparticles
figure of merit
electric dipoles
multipoles
Lattice constants
Refractive index
near fields
incidence
Gases
Electric fields
refractivity
Wavelength

Keywords

  • Nonlinear optics
  • plasmonics
  • quadrupoles
  • surface lattice resonance

ASJC Scopus subject areas

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

Cite this

Hooper, D. C., Kuppe, C., Wang, D., Wang, W., Guan, J., Odom, T. W., & Valev, V. K. (Accepted/In press). Second Harmonic Spectroscopy of Surface Lattice Resonances. Nano Letters. https://doi.org/10.1021/acs.nanolett.8b03574

Second Harmonic Spectroscopy of Surface Lattice Resonances. / Hooper, David C.; Kuppe, Christian; Wang, Danqing; Wang, Weijia; Guan, Jun; Odom, Teri W; Valev, Ventsislav K.

In: Nano Letters, 01.01.2018.

Research output: Contribution to journalArticle

Hooper, David C. ; Kuppe, Christian ; Wang, Danqing ; Wang, Weijia ; Guan, Jun ; Odom, Teri W ; Valev, Ventsislav K. / Second Harmonic Spectroscopy of Surface Lattice Resonances. In: Nano Letters. 2018.
@article{b6908da1206b4594a7ce512d64374e2d,
title = "Second Harmonic Spectroscopy of Surface Lattice Resonances",
abstract = "Because of their large figures of merit, surface lattice resonances (SLRs) in metal nanoparticle arrays are very promising for chemical and biomolecular sensing in both liquid and gas media. SLRs are sensitive to refractive index changes both near the surface of the nanoparticles (surface sensitivity) and in the volume between them (bulk sensitivity). Because of its intrinsic surface-sensitivity and a power law dependence on electric fields, second harmonic generation (SHG) spectroscopy can improve upon both the surface and volume sensitivities of SLRs. In this report on SHG spectroscopy of plasmonic nanoparticles, we show that the SHG signal is greatly increased (up to 450 times) by the SLRs. We also demonstrate very narrow resonances in SHG intensity (∼5 nm fwhm). We illustrate how the SHG resonances are highly sensitive to SLRs by varying the fundamental wavelength, angle of incidence, nanoparticle material, and lattice constant of the arrays. Finally, we identify an SHG resonance (10 nm fwhm) that is electric dipole forbidden and can be attributed to higher-order multipoles, enhanced by the strong near-fields of SLRs. Our results open up new and very promising avenues for chemical and biomolecular sensing based on SHG spectroscopy of SLRs.",
keywords = "Nonlinear optics, plasmonics, quadrupoles, surface lattice resonance",
author = "Hooper, {David C.} and Christian Kuppe and Danqing Wang and Weijia Wang and Jun Guan and Odom, {Teri W} and Valev, {Ventsislav K.}",
year = "2018",
month = "1",
day = "1",
doi = "10.1021/acs.nanolett.8b03574",
language = "English",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",

}

TY - JOUR

T1 - Second Harmonic Spectroscopy of Surface Lattice Resonances

AU - Hooper, David C.

AU - Kuppe, Christian

AU - Wang, Danqing

AU - Wang, Weijia

AU - Guan, Jun

AU - Odom, Teri W

AU - Valev, Ventsislav K.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Because of their large figures of merit, surface lattice resonances (SLRs) in metal nanoparticle arrays are very promising for chemical and biomolecular sensing in both liquid and gas media. SLRs are sensitive to refractive index changes both near the surface of the nanoparticles (surface sensitivity) and in the volume between them (bulk sensitivity). Because of its intrinsic surface-sensitivity and a power law dependence on electric fields, second harmonic generation (SHG) spectroscopy can improve upon both the surface and volume sensitivities of SLRs. In this report on SHG spectroscopy of plasmonic nanoparticles, we show that the SHG signal is greatly increased (up to 450 times) by the SLRs. We also demonstrate very narrow resonances in SHG intensity (∼5 nm fwhm). We illustrate how the SHG resonances are highly sensitive to SLRs by varying the fundamental wavelength, angle of incidence, nanoparticle material, and lattice constant of the arrays. Finally, we identify an SHG resonance (10 nm fwhm) that is electric dipole forbidden and can be attributed to higher-order multipoles, enhanced by the strong near-fields of SLRs. Our results open up new and very promising avenues for chemical and biomolecular sensing based on SHG spectroscopy of SLRs.

AB - Because of their large figures of merit, surface lattice resonances (SLRs) in metal nanoparticle arrays are very promising for chemical and biomolecular sensing in both liquid and gas media. SLRs are sensitive to refractive index changes both near the surface of the nanoparticles (surface sensitivity) and in the volume between them (bulk sensitivity). Because of its intrinsic surface-sensitivity and a power law dependence on electric fields, second harmonic generation (SHG) spectroscopy can improve upon both the surface and volume sensitivities of SLRs. In this report on SHG spectroscopy of plasmonic nanoparticles, we show that the SHG signal is greatly increased (up to 450 times) by the SLRs. We also demonstrate very narrow resonances in SHG intensity (∼5 nm fwhm). We illustrate how the SHG resonances are highly sensitive to SLRs by varying the fundamental wavelength, angle of incidence, nanoparticle material, and lattice constant of the arrays. Finally, we identify an SHG resonance (10 nm fwhm) that is electric dipole forbidden and can be attributed to higher-order multipoles, enhanced by the strong near-fields of SLRs. Our results open up new and very promising avenues for chemical and biomolecular sensing based on SHG spectroscopy of SLRs.

KW - Nonlinear optics

KW - plasmonics

KW - quadrupoles

KW - surface lattice resonance

UR - http://www.scopus.com/inward/record.url?scp=85058499800&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058499800&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.8b03574

DO - 10.1021/acs.nanolett.8b03574

M3 - Article

C2 - 30525669

AN - SCOPUS:85058499800

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

ER -