Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures

@article{Yildiz2014EnhancedSH,
  title={Enhanced second harmonic generation from coupled asymmetric plasmonic metal nanostructures},
  author={Bilge Can Yildiz and Mehmet Emre Tasgin and Musa Kurtuluş Abak and Şahin Coşkun and Husnu Emrah Unalan and Alpan Bek},
  journal={Journal of Optics},
  year={2014},
  volume={17}
}
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. 

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References

SHOWING 1-10 OF 37 REFERENCES

Augmenting second harmonic generation using Fano resonances in plasmonic systems.

TLDR
These results illustrate the versatility of Fano resonant structures to engineer specific optical responses both in the linear and nonlinear regimes thus paving the way for future investigations on the role of dark modes in nonlinear and quantum optics.

Large enhancement of nonlinear optical phenomena by plasmonic nanocavity gratings.

TLDR
A novel plAsmonic structure, called plasmonic nanocavity grating, is shown to dramatically enhance surface nonlinear optical processes, consisting of resonant cavities that are periodically arranged to combine local and grating resonances.

Nonlinear plasmon-photon interaction resolved by k-space spectroscopy.

TLDR
K-space spectroscopy can distinguish between the plasmonic and photonic SHG processes that occur in a metal nanofilm when it is optically driven via the Kretschmann geometry and revealed a nonlinear interaction where two SP annihilate to create a second-harmonic photon.

Enhanced second harmonic generation by photonic-plasmonic Fano-type coupling in nanoplasmonic arrays.

TLDR
These findings enable the engineering of the nonlinear optical response of Fano-type coupled nanoparticle arrays that are relevant to a number of device applications in nonlinear nano-optics and plasmonics, such as on-chip frequency generators, modulators, switchers, and sensors.

Quantum-coherence-enhanced surface plasmon amplification by stimulated emission of radiation.

TLDR
It is shown that quantum coherence significantly enhances the generation of surface plasmons and the coherent drive allows us to control the dynamics and holds promise for quantum control of nanoplasmonic devices.

The Fano resonance in plasmonic nanostructures and metamaterials.

TLDR
The steep dispersion of the Fano resonance profile promises applications in sensors, lasing, switching, and nonlinear and slow-light devices.

Multispectral plasmon induced transparency in coupled meta-atoms.

TLDR
An approach enabling construction of a scalable metamaterial media supporting multispectral plasmon induced transparency which can simultaneously enhance nonlinear processes at multiple frequency domains could open up new possibilities in optical information processing.

Plasmonic Non-linear Conversion of Continuous Wave Light by Gold Nanoparticle Clusters withFluorescent Protein Loaded Gaps

We propose and demonstrate a method which is feasible for deterministic activation of few molecules. Our method relies on non-linear optical excitation of few enhanced yellow fluorescent protein

Plasmon induced transparency in cascaded π-shaped metamaterials.

TLDR
A more compact system is introduced which possesses the EIT-like characteristics and as well as much smaller mode volumes and can be utilized for a wide range of applications including bio-chemical sensors, optical filters and modulators and enhancement of non-linear processes.

Metal nanoparticle plasmons operating within a quantum lifetime.

We investigate the dynamics of a plasmonic oscillation over a metal nanoparticle when it is strongly coupled to a quantum emitter (e.g. quantum dot, molecule). We simulate the density matrix