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Ultrafast Nonlinear control of progressively loaded, single plasmonic nanoantennas fabricated using helium ion milling

Ultrafast Nonlinear control of progressively loaded, single plasmonic nanoantennas fabricated using helium ion milling
Ultrafast Nonlinear control of progressively loaded, single plasmonic nanoantennas fabricated using helium ion milling
We demonstrate milling of partial antenna gaps and narrow conducting bridges with nanometer precision using a helium ion beam microscope. Single particle spectroscopy shows large shifts in the plasmonic mode spectrum of the milled antennas, associated with the transition from capacitive to conductive gap loading. A conducting bridge of nanometer height is found sufficient to shift the antenna from the capacitive to the conductive coupling regime, in agreement with circuit theory. Picosecond pump-probe spectroscopy reveals an enhanced nonlinear response for partially milled antennas, reaching an optimum value for an intermediate bridge height. Our results show that manipulation of the antenna load can be used to increase the nonlinear response of plasmonic antennas.
1530-6984
5647-5653
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Boden, Stuart A.
83976b65-e90f-42d1-9a01-fe9cfc571bf8
Aizpurua, Javier
17705349-38e3-4089-adba-547d02449095
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Boden, Stuart A.
83976b65-e90f-42d1-9a01-fe9cfc571bf8
Aizpurua, Javier
17705349-38e3-4089-adba-547d02449095
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9

Wang, Yudong, Abb, Martina, Boden, Stuart A., Aizpurua, Javier, de Groot, C.H. and Muskens, Otto L. (2013) Ultrafast Nonlinear control of progressively loaded, single plasmonic nanoantennas fabricated using helium ion milling. Nano Letters, 13 (11), 5647-5653. (doi:10.1021/nl403316z). (PMID:24127754)

Record type: Article

Abstract

We demonstrate milling of partial antenna gaps and narrow conducting bridges with nanometer precision using a helium ion beam microscope. Single particle spectroscopy shows large shifts in the plasmonic mode spectrum of the milled antennas, associated with the transition from capacitive to conductive gap loading. A conducting bridge of nanometer height is found sufficient to shift the antenna from the capacitive to the conductive coupling regime, in agreement with circuit theory. Picosecond pump-probe spectroscopy reveals an enhanced nonlinear response for partially milled antennas, reaching an optimum value for an intermediate bridge height. Our results show that manipulation of the antenna load can be used to increase the nonlinear response of plasmonic antennas.

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Wang Nano Lett HIM 131014.pdf - Accepted Manuscript
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e-pub ahead of print date: 15 October 2013
Published date: 2013
Organisations: Nanoelectronics and Nanotechnology, Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 365514
URI: http://eprints.soton.ac.uk/id/eprint/365514
DOI: doi:10.1021/nl403316z
ISSN: 1530-6984
PURE UUID: e76da7ff-1d32-4353-a872-26eec1af6998
ORCID for Stuart A. Boden: ORCID iD orcid.org/0000-0002-4232-1828
ORCID for C.H. de Groot: ORCID iD orcid.org/0000-0002-3850-7101
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

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Date deposited: 09 Jun 2014 08:38
Last modified: 26 Nov 2019 01:51

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Contributors

Author: Yudong Wang
Author: Martina Abb
Author: Stuart A. Boden ORCID iD
Author: Javier Aizpurua
Author: C.H. de Groot ORCID iD
Author: Otto L. Muskens ORCID iD

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