Enhanced second-harmonic generation from magnetic resonance in AlGaAs nanoantennas

Year: 2015

Authors: Carletti L., Locatelli A., Stepanenko O., Leo G., De Angelis C.

Autors Affiliation: Department of Information Engineering, University of Brescia, Via Branze 38, Brescia 25123, Italy
Matériaux et Phénomènes Quantiques, Université Paris Diderot—CNRS, Sorbonne Paris Cité, 10 rue Alice Domon et Léonie Duquet, F-75013 Paris, France

Abstract: We designed AlGaAs-on-aluminium-oxide all-dielectric nanoantennas with magnetic dipole resonance at near-infrared wavelengths. These devices, shaped as cylinders of 400nm height and different radii, offer a few crucial advantages with respect to the silicon-on-insulator platform for operation around 1.55 mu m wavelength: absence of two-photon absorption, high chi((2)) nonlinearity, and the perspective of a monolithic integration with a laser. We analyzed volume chi((2)) nonlinear effects associated to a magnetic dipole resonance in these nanoantennas, and we predict second-harmonic generation exceeding 10(-3) efficiency with 1GW/cm(2) of pump intensity. (C)2015 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 23 (20)      Pages from: 26544  to: 26550

More Information: The paper and the participation of all the authors has been made in the framework of the Erasmus Mundus NANOPHI project. L. Carletti, C. De Angelis and A. Locatelli acknowledge financial support from U.S. Army (“Engineering second order nonlinear effects in optical antennas”) and CARIPLO (“SHAPES – Second-HArmonic Plasmon-Enhanced Sensing”). G. Leo and Q. Stepanenko acknowledge financial support from the DOLPHIN project of the SEAM (Science and Engineering of Advanced Materials and Devices) Labex of Sorbonne Paris Cite.
DOI: 10.1364/OE.23.026544

Citations: 174
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