Investigating the origin of third harmonic generation from diabolo optical antennas

Liping Shi (Corresponding Author), J.R. Andrade, Hyunwoong Kim, S. Han, Rana Nicolas, Dominik Franz, Willem Boutu, Torsten Heidenblut, F.B. Segerink, Hubertus M.J. Bastiaens, Hamed Merdji, Seung-Woo Kim, Uwe Morgner, M. Kovacev

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Abstract

We propose to use diabolo nanoantennas for experimentally investigating the origin of the enhanced third harmonic generation by localized surface plasmon polaritons. In such a geometry, the opposing apexes of bowties are electrically connected by a thin gold nanorod, which has two important functions in discriminating the point of harmonic generation. First, the inserted gold nanorod shifts the field enhancement area to be far away from the dielectric substrate material. Next, the accumulation of free charges at the adjacent bowtie tips produces a strong electric field inside the gold nanorod. The diabolo nanoantennas allow us to examine the contribution of the bare gold susceptibility to the third harmonic conversion. Our results reveal that the bare gold does not significantly enhance the harmonic generation at high pump intensity. From this, we deduce that in regular bowtie antennas, the enhanced harmonic photons mainly arise from the substrate sapphire that is located in the feedgap of the bowtie, where the electric near-field is significantly enhanced by the localized surface plasmons.
Original languageEnglish
Article number173102
JournalApplied physics letters
Volume111
Issue number17
DOIs
Publication statusPublished - 26 Oct 2017

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harmonic generations
antennas
gold
nanorods
harmonics
plasmons
polaritons
near fields
sapphire
apexes
pumps
magnetic permeability
electric fields
augmentation
shift
photons
geometry

Cite this

Shi, L., Andrade, J. R., Kim, H., Han, S., Nicolas, R., Franz, D., ... Kovacev, M. (2017). Investigating the origin of third harmonic generation from diabolo optical antennas. Applied physics letters, 111(17), [173102]. https://doi.org/10.1063/1.5001005
Shi, Liping ; Andrade, J.R. ; Kim, Hyunwoong ; Han, S. ; Nicolas, Rana ; Franz, Dominik ; Boutu, Willem ; Heidenblut, Torsten ; Segerink, F.B. ; Bastiaens, Hubertus M.J. ; Merdji, Hamed ; Kim, Seung-Woo ; Morgner, Uwe ; Kovacev, M. / Investigating the origin of third harmonic generation from diabolo optical antennas. In: Applied physics letters. 2017 ; Vol. 111, No. 17.
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abstract = "We propose to use diabolo nanoantennas for experimentally investigating the origin of the enhanced third harmonic generation by localized surface plasmon polaritons. In such a geometry, the opposing apexes of bowties are electrically connected by a thin gold nanorod, which has two important functions in discriminating the point of harmonic generation. First, the inserted gold nanorod shifts the field enhancement area to be far away from the dielectric substrate material. Next, the accumulation of free charges at the adjacent bowtie tips produces a strong electric field inside the gold nanorod. The diabolo nanoantennas allow us to examine the contribution of the bare gold susceptibility to the third harmonic conversion. Our results reveal that the bare gold does not significantly enhance the harmonic generation at high pump intensity. From this, we deduce that in regular bowtie antennas, the enhanced harmonic photons mainly arise from the substrate sapphire that is located in the feedgap of the bowtie, where the electric near-field is significantly enhanced by the localized surface plasmons.",
author = "Liping Shi and J.R. Andrade and Hyunwoong Kim and S. Han and Rana Nicolas and Dominik Franz and Willem Boutu and Torsten Heidenblut and F.B. Segerink and Bastiaens, {Hubertus M.J.} and Hamed Merdji and Seung-Woo Kim and Uwe Morgner and M. Kovacev",
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Shi, L, Andrade, JR, Kim, H, Han, S, Nicolas, R, Franz, D, Boutu, W, Heidenblut, T, Segerink, FB, Bastiaens, HMJ, Merdji, H, Kim, S-W, Morgner, U & Kovacev, M 2017, 'Investigating the origin of third harmonic generation from diabolo optical antennas', Applied physics letters, vol. 111, no. 17, 173102. https://doi.org/10.1063/1.5001005

Investigating the origin of third harmonic generation from diabolo optical antennas. / Shi, Liping (Corresponding Author); Andrade, J.R.; Kim, Hyunwoong; Han, S.; Nicolas, Rana; Franz, Dominik; Boutu, Willem; Heidenblut, Torsten; Segerink, F.B. ; Bastiaens, Hubertus M.J.; Merdji, Hamed; Kim, Seung-Woo; Morgner, Uwe; Kovacev, M.

In: Applied physics letters, Vol. 111, No. 17, 173102, 26.10.2017.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Investigating the origin of third harmonic generation from diabolo optical antennas

AU - Shi, Liping

AU - Andrade, J.R.

AU - Kim, Hyunwoong

AU - Han, S.

AU - Nicolas, Rana

AU - Franz, Dominik

AU - Boutu, Willem

AU - Heidenblut, Torsten

AU - Segerink, F.B.

AU - Bastiaens, Hubertus M.J.

AU - Merdji, Hamed

AU - Kim, Seung-Woo

AU - Morgner, Uwe

AU - Kovacev, M.

PY - 2017/10/26

Y1 - 2017/10/26

N2 - We propose to use diabolo nanoantennas for experimentally investigating the origin of the enhanced third harmonic generation by localized surface plasmon polaritons. In such a geometry, the opposing apexes of bowties are electrically connected by a thin gold nanorod, which has two important functions in discriminating the point of harmonic generation. First, the inserted gold nanorod shifts the field enhancement area to be far away from the dielectric substrate material. Next, the accumulation of free charges at the adjacent bowtie tips produces a strong electric field inside the gold nanorod. The diabolo nanoantennas allow us to examine the contribution of the bare gold susceptibility to the third harmonic conversion. Our results reveal that the bare gold does not significantly enhance the harmonic generation at high pump intensity. From this, we deduce that in regular bowtie antennas, the enhanced harmonic photons mainly arise from the substrate sapphire that is located in the feedgap of the bowtie, where the electric near-field is significantly enhanced by the localized surface plasmons.

AB - We propose to use diabolo nanoantennas for experimentally investigating the origin of the enhanced third harmonic generation by localized surface plasmon polaritons. In such a geometry, the opposing apexes of bowties are electrically connected by a thin gold nanorod, which has two important functions in discriminating the point of harmonic generation. First, the inserted gold nanorod shifts the field enhancement area to be far away from the dielectric substrate material. Next, the accumulation of free charges at the adjacent bowtie tips produces a strong electric field inside the gold nanorod. The diabolo nanoantennas allow us to examine the contribution of the bare gold susceptibility to the third harmonic conversion. Our results reveal that the bare gold does not significantly enhance the harmonic generation at high pump intensity. From this, we deduce that in regular bowtie antennas, the enhanced harmonic photons mainly arise from the substrate sapphire that is located in the feedgap of the bowtie, where the electric near-field is significantly enhanced by the localized surface plasmons.

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JO - Applied physics letters

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SN - 0003-6951

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