Metallic slit arrays filled with third-order nonlinear media: Optical Kerr effect and third-harmonic generation
EntityUAM. Departamento de Física Teórica de la Materia Condensada
PublisherAmerican Physical Society
10.1103/PhysRevB.83.235425Physical Review B 83.23 (2011): 235425
ISSN1098-0121; 1550-235X (online)
Funded byWe acknowledge support from the Spanish Ministry of Science and Innovation under Projects No. MAT2008-06609-C02 and No. CSD2007-046-Nanolight.es
ProjectGobierno de España. CSD2007-046-Nanolight.es; Gobierno de España. MAT2008-06609- C02
Rights© 2011 American Physical Society
A theoretical study on the nonlinear optical properties of both gold and nickel slit arrays inlaid with a third-order nonlinear dielectric medium is presented. In particular, we investigate the optical Kerr effect and third harmonic generation. The geometrical parameters, along with the optical properties of each metal, determine the electromagnetic environment near the slits and, in turn, the nonlinear optical response. The optical Kerr effect is only seen for slit arrays in gold, where the transmitted and reflected currents are modified with the incident intensity, while nickel slit arrays behave linearly within the same range of input intensities. However, third harmonic emission occurs for both systems, unveiling third-order nonlinearities taking place also in nickel structures
Google Scholar:Rodrigo, Sergio G. - Carretero-Palacios, S. - García-Vidal, F. J. - Martín-Moreno, L.
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