Atıf İçin Kopyala
Yıldız B. C., Taşgın M. E., Abak M. K., Coskun S., Ünalan H. E., Bek A.
JOURNAL OF OPTICS, cilt.17, 2015 (SCI-Expanded)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
17
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Basım Tarihi:
2015
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Doi Numarası:
10.1088/2040-8978/17/12/125005
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Dergi Adı:
JOURNAL OF OPTICS
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Derginin Tarandığı İndeksler:
Science Citation Index Expanded (SCI-EXPANDED), Scopus
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Anahtar Kelimeler:
Fano resonance, second harmonic generation, plasmons, nonlinear optics, enhancement, INDUCED TRANSPARENCY, FANO RESONANCES, NANOPARTICLES, METAMATERIALS, SYSTEMS, FUTURE, SILVER
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Orta Doğu Teknik Üniversitesi Adresli:
Evet
Özet
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.