Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna
The integration of plasmonic antennas on single-mode silicon nitride waveguides offers great perspective for integrated surface-enhanced Raman spectroscopy (SERS). However, the few reported experimental demonstrations still require multiple plasmonic antennas to obtain a detectable SERS spectrum. He...
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doaj-75f193b308b3459a95ef28fa847597ed2021-05-02T13:11:22ZengDe GruyterNanophotonics2192-86142018-05-01771299130610.1515/nanoph-2018-0003nanoph-2018-0003Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antennaPeyskens Frédéric0Wuytens Pieter1Raza Ali2Van Dorpe Pol3Baets Roel4Photonics Research Group, INTEC Department, Ghent University-IMEC, Technologiepark-Zwijnaarde 15, 9052 Ghent, BelgiumPhotonics Research Group, INTEC Department, Ghent University-IMEC, Technologiepark-Zwijnaarde 15, 9052 Ghent, BelgiumPhotonics Research Group, INTEC Department, Ghent University-IMEC, Technologiepark-Zwijnaarde 15, 9052 Ghent, BelgiumIMEC, Kapeldreef 75, 3001 Heverlee, BelgiumPhotonics Research Group, INTEC Department, Ghent University-IMEC, Technologiepark-Zwijnaarde 15, 9052 Ghent, BelgiumThe integration of plasmonic antennas on single-mode silicon nitride waveguides offers great perspective for integrated surface-enhanced Raman spectroscopy (SERS). However, the few reported experimental demonstrations still require multiple plasmonic antennas to obtain a detectable SERS spectrum. Here, we show, for the first time, SERS signal detection by a single nanoplasmonic antenna integrated on a single-mode SiN waveguide. For this purpose, we investigated a backscattering detection scheme in combination with background noise reduction, which allowed an optimization of the signal-to-noise ratio (SNR) of this platform. Furthermore, a comparison with the free-space SERS spectrum of the same antenna shows that the conversion efficiency from pump power to total radiated Stokes power is twice as efficient in the case of waveguide excitation. As such, we explored several important aspects in the optimization of on-chip SERS sensors and experimentally demonstrated the power of exciting nanoplasmonic antennas using the evanescent field of a waveguide. This observation not only is useful for Raman sensing but also could be beneficial for any process involving plasmonic enhancement.http://www.degruyter.com/view/j/nanoph.2018.7.issue-7/nanoph-2018-0003/nanoph-2018-0003.xml?format=INTintegrated photonicsplasmonicssurface-enhanced Raman spectroscopy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Peyskens Frédéric Wuytens Pieter Raza Ali Van Dorpe Pol Baets Roel |
spellingShingle |
Peyskens Frédéric Wuytens Pieter Raza Ali Van Dorpe Pol Baets Roel Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna Nanophotonics integrated photonics plasmonics surface-enhanced Raman spectroscopy |
author_facet |
Peyskens Frédéric Wuytens Pieter Raza Ali Van Dorpe Pol Baets Roel |
author_sort |
Peyskens Frédéric |
title |
Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna |
title_short |
Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna |
title_full |
Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna |
title_fullStr |
Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna |
title_full_unstemmed |
Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna |
title_sort |
waveguide excitation and collection of surface-enhanced raman scattering from a single plasmonic antenna |
publisher |
De Gruyter |
series |
Nanophotonics |
issn |
2192-8614 |
publishDate |
2018-05-01 |
description |
The integration of plasmonic antennas on single-mode silicon nitride waveguides offers great perspective for integrated surface-enhanced Raman spectroscopy (SERS). However, the few reported experimental demonstrations still require multiple plasmonic antennas to obtain a detectable SERS spectrum. Here, we show, for the first time, SERS signal detection by a single nanoplasmonic antenna integrated on a single-mode SiN waveguide. For this purpose, we investigated a backscattering detection scheme in combination with background noise reduction, which allowed an optimization of the signal-to-noise ratio (SNR) of this platform. Furthermore, a comparison with the free-space SERS spectrum of the same antenna shows that the conversion efficiency from pump power to total radiated Stokes power is twice as efficient in the case of waveguide excitation. As such, we explored several important aspects in the optimization of on-chip SERS sensors and experimentally demonstrated the power of exciting nanoplasmonic antennas using the evanescent field of a waveguide. This observation not only is useful for Raman sensing but also could be beneficial for any process involving plasmonic enhancement. |
topic |
integrated photonics plasmonics surface-enhanced Raman spectroscopy |
url |
http://www.degruyter.com/view/j/nanoph.2018.7.issue-7/nanoph-2018-0003/nanoph-2018-0003.xml?format=INT |
work_keys_str_mv |
AT peyskensfrederic waveguideexcitationandcollectionofsurfaceenhancedramanscatteringfromasingleplasmonicantenna AT wuytenspieter waveguideexcitationandcollectionofsurfaceenhancedramanscatteringfromasingleplasmonicantenna AT razaali waveguideexcitationandcollectionofsurfaceenhancedramanscatteringfromasingleplasmonicantenna AT vandorpepol waveguideexcitationandcollectionofsurfaceenhancedramanscatteringfromasingleplasmonicantenna AT baetsroel waveguideexcitationandcollectionofsurfaceenhancedramanscatteringfromasingleplasmonicantenna |
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