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Opt Lett. 2010 May 15;35(10):1551-3. doi: 10.1364/OL.35.001551.

Nonlocal ponderomotive nonlinearity in plasmonics.

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1
Department of Electrical Engineering, Technion, Haifa 32000, Israel. gpasha@tx.technion.ac.il

Abstract

We analyze an inherent nonlinearity of surface plasmon polaritons at the interface of Fermi-Dirac metal plasma, stemming from the depletion of electron density in high-intensity regions. The derived optical nonlinear coefficients are comparable with the experimental values for metals. We calculate the dispersion relations for the nonlinear propagation of high-intensity surface plasmon polaritons, predicting a nonlinearity-induced cutoff and vanishing group velocity.

PMID:
20479805
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