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Dynamics and dephasing of plasmon polaritons in metallic photonic crystal superlattices: Time- and frequency-resolved nonlinear autocorrelation measurements and simulations

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Utikal,  T.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Zentgraf,  T.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Kuhl,  J.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Giessen,  H.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Utikal, T., Zentgraf, T., Kuhl, J., & Giessen, H. (2007). Dynamics and dephasing of plasmon polaritons in metallic photonic crystal superlattices: Time- and frequency-resolved nonlinear autocorrelation measurements and simulations. Physical Review B, 76(24): 245107.


Cite as: https://hdl.handle.net/21.11116/0000-000E-B60B-9
Abstract
We present time- and frequency-resolved nonlinear autocorrelation measurements of polaritonic eigenstates in gold nanowire photonic crystal superlattices on a dielectric waveguide layer. The measurements show a complex behavior of the third-harmonic signal. The spectrum consists of several components with different intensities and time dynamics. Simulations based on a simple model, where the polaritonic eigenmodes are described by damped Lorentzian oscillators, show excellent agreement of time- and frequency-resolved data with the experiments. The simulations show that the superlattice structure leads to a strong modification of the polariton dynamics and prolonged dephasing times up to 60 fs compared to a simple lattice structure.