Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures

Bilge Yildiz; Mehmet Emre Tasgin; Musa Kurtulus Abak; Sahin Coskun; Husnu Emrah Unalan; Alpan Bek

doi:10.1088/2040-8978/17/12/125005

Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures

Bilge Yildiz
, Mehmet Emre Tasgin
, Musa Kurtulus Abak
, Sahin Coskun
, Husnu Emrah Unalan
, Alpan Bek

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

We experimentally demonstrate that two coupled metal nanostructures (MNSs), a silver nanowire and bipyramid, can produce ∼30 times enhanced second harmonic generation compared to the particles alone. We develop a simple theoretical model, presenting the path interference effects in the nonlinear response of coupled MNSs. We show that the reason for such an enhancement can be the occurrence of a Fano resonance due to the coupling of the converter MNS to the long-lived mode of the attached MNS.

Original language	English
Journal	Journal of Optics
Volume	17
Issue number	12
DOIs	https://doi.org/10.1088/2040-8978/17/12/125005
Publication status	Published - 2015
MoE publication type	A1 Journal article-refereed

Funding

A.B. acknowledges support from TUBITAK Grants No. 113F239, 113M931, 113F375, 114E105 and METU grant No. BAP-01-05-2015-003. M.E.T. acknowledges support from TUBITAK Grants No. 112T927 and No. 114F170.

Keywords

Fano resonance
second harmonic generation
plasmons
nonlinear optics
enhancement

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10.1088/2040-8978/17/12/125005

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abstract = "We experimentally demonstrate that two coupled metal nanostructures (MNSs), a silver nanowire and bipyramid, can produce ∼30 times enhanced second harmonic generation compared to the particles alone. We develop a simple theoretical model, presenting the path interference effects in the nonlinear response of coupled MNSs. We show that the reason for such an enhancement can be the occurrence of a Fano resonance due to the coupling of the converter MNS to the long-lived mode of the attached MNS.",

keywords = "Fano resonance, second harmonic generation, plasmons, nonlinear optics, enhancement",

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AU - Yildiz, Bilge

AU - Tasgin, Mehmet Emre

AU - Abak, Musa Kurtulus

AU - Coskun, Sahin

AU - Unalan, Husnu Emrah

AU - Bek, Alpan

PY - 2015

Y1 - 2015

N2 - We experimentally demonstrate that two coupled metal nanostructures (MNSs), a silver nanowire and bipyramid, can produce ∼30 times enhanced second harmonic generation compared to the particles alone. We develop a simple theoretical model, presenting the path interference effects in the nonlinear response of coupled MNSs. We show that the reason for such an enhancement can be the occurrence of a Fano resonance due to the coupling of the converter MNS to the long-lived mode of the attached MNS.

AB - We experimentally demonstrate that two coupled metal nanostructures (MNSs), a silver nanowire and bipyramid, can produce ∼30 times enhanced second harmonic generation compared to the particles alone. We develop a simple theoretical model, presenting the path interference effects in the nonlinear response of coupled MNSs. We show that the reason for such an enhancement can be the occurrence of a Fano resonance due to the coupling of the converter MNS to the long-lived mode of the attached MNS.

KW - Fano resonance

KW - second harmonic generation

KW - plasmons

KW - nonlinear optics

KW - enhancement

UR - http://iopscience.iop.org/article/10.1088/2040-8978/17/12/125005/meta

U2 - 10.1088/2040-8978/17/12/125005

DO - 10.1088/2040-8978/17/12/125005

M3 - Article

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VL - 17

JO - Journal of Optics

JF - Journal of Optics

IS - 12

ER -

Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures

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Keywords

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