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      Nonlinear metal-dielectric nanoantennas for light switching and routing

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          Abstract

          We introduce a novel hybrid metal-dielectric nanoantenna composed of dielectric (crystalline silicon) and metal (silver) nanoparticles. A high-permittivity dielectric nanoparticle allows to achieve effective light harvesting, and nonlinearity of a metal nanoparticle controls the radiation direction. We show that the radiation pattern of such a nanoantenna can be switched between the forward and backward directions by varying only the light intensity around the level of 11 MW/cm\(^2\), with the characteristic switching time of 260 fs.

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          Optical Constants of the Noble Metals

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            Antennas for light

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                Author and article information

                Journal
                31 May 2012
                Article
                10.1088/1367-2630/14/9/093005
                1205.6913
                20f52858-5f0a-4037-94a8-c5dd1d13d331

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
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                9 pages, 5 figures, submitted to New J. Phys
                physics.optics

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