Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures

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Date

2015-12-01

Author

Yıldız, Bilge Can
Taşgın, Mehmet Emre
Abak, Musa Kurtuluş
Coskun, Sahin
Ünalan, Hüsnü Emrah
Bek, Alpan

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We experimentally demonstrate that two coupled metal nanostructures (MNSs), a silver nanowire and bipyramid, can produce similar to 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.

Subject Keywords

Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

URI

https://hdl.handle.net/11511/38885

Journal

JOURNAL OF OPTICS

DOI

https://doi.org/10.1088/2040-8978/17/12/125005

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

B. C. Yıldız, M. E. Taşgın, M. K. Abak, S. Coskun, H. E. Ünalan, and A. Bek, “Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures,” JOURNAL OF OPTICS, pp. 0–0, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38885.