Subwavelength plasmonic kinks, solitons, and oscillons in arrays of nonlinear metallic nanoparticles
Date
2012
Authors
Noskov, R E
Belov, Pavel A
Kivshar, Yuri
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SPIE - The International Society for Optical Engineering
Abstract
We consider spatial hysteresis and modulational instability in arrays of nonlinear metallic nanoparticles. We show that such plasmonic systems are characterized by a bistable response, and they can support the propagation of dissipative switching waves (or plasmonic kinks) connecting the states with different polarization. We demonstrate that modulational instability, also inherent in our system, can lead to the formation of regular periodic or quasi-periodic modulations of the polarization. We reveal that arrays of metallic nanoparticles can support nonlinear localized modes of two different types - plasmon-solitons and plasmon-oscillons. They both possess deeply subwavelength size. However, the profile of plasmon-solitons is stationary; whereas plasmon-oscillons has the oscillating profile which can stand at rest or slowly drift along the chain.
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Keywords
Keywords: Bistables; Metallic nanoparticles; Modulational instability; Nonlinear localized modes; Nonlinear surface; Oscillons; Plasmonic; Plasmonics; Quasiperiodic modulations; Sub-wavelength; Nanoparticles; Nonlinear optics; Optical bistability; Polarization; Sol bistability; modulational instability; nonlinear surface plasmon resonance; Plasmonics
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Proceedings of SPIE - The International Society for Optical Engineering
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Conference paper
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Open Access
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Restricted until
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