Controlling second-harmonic generation at the nanoscale with monolithic AlGaAs-on-AlOx antennas

L. Carletti; D. Rocco; A. Locatelli; C. De Angelis; V. F. Gili; M. Ravaro; I. Favero; G. Leo; M. Finazzi; L. Ghirardini; M. Celebrano; G. Marino; A. V. Zayats

doi:10.1088/1361-6528/aa5645

Controlling second-harmonic generation at the nanoscale with monolithic AlGaAs-on-AlOx antennas

L. Carletti, D. Rocco, A. Locatelli, C. De Angelis, V. F. Gili, M. Ravaro, I. Favero, G. Leo, M. Finazzi, L. Ghirardini, M. Celebrano, G. Marino, A. V. Zayats

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80 Citations (Scopus)

Abstract

We review recent achievements in the field of nanoscale nonlinear AlGaAs photonics based on all-dielectric optical antennas. After discussing the motivation and main technological challenges for the development of an AlGaAs monolithic platform for χ ⁽²⁾ nonlinear nanophotonics, we present numerical and experimental investigations of the second-order nonlinear response and physical reasons for high efficiency of second-order nonlinear interactions in the AlGaAs nano-antennas. In particular, we emphasize the role of the dipolar resonances at the fundamental frequency and the multipolar resonances at the second harmonic wavelength. We also discuss second-harmonic generation directionality and show possible strategies to engineer the radiation pattern of nonlinear antennas.

Original language	English
Article number	114005
Journal	NANOTECHNOLOGY
Volume	28
Issue number	11
DOIs	https://doi.org/10.1088/1361-6528/aa5645
Publication status	Published - 16 Feb 2017

Keywords

metamaterials
optical antennas
second harmonic generation

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10.1088/1361-6528/aa5645

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abstract = "We review recent achievements in the field of nanoscale nonlinear AlGaAs photonics based on all-dielectric optical antennas. After discussing the motivation and main technological challenges for the development of an AlGaAs monolithic platform for χ (2) nonlinear nanophotonics, we present numerical and experimental investigations of the second-order nonlinear response and physical reasons for high efficiency of second-order nonlinear interactions in the AlGaAs nano-antennas. In particular, we emphasize the role of the dipolar resonances at the fundamental frequency and the multipolar resonances at the second harmonic wavelength. We also discuss second-harmonic generation directionality and show possible strategies to engineer the radiation pattern of nonlinear antennas.",

keywords = "metamaterials, optical antennas, second harmonic generation",

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AU - Carletti, L.

AU - Rocco, D.

AU - Locatelli, A.

AU - De Angelis, C.

AU - Gili, V. F.

AU - Ravaro, M.

AU - Favero, I.

AU - Leo, G.

AU - Finazzi, M.

AU - Ghirardini, L.

AU - Celebrano, M.

AU - Marino, G.

AU - Zayats, A. V.

PY - 2017/2/16

Y1 - 2017/2/16

N2 - We review recent achievements in the field of nanoscale nonlinear AlGaAs photonics based on all-dielectric optical antennas. After discussing the motivation and main technological challenges for the development of an AlGaAs monolithic platform for χ (2) nonlinear nanophotonics, we present numerical and experimental investigations of the second-order nonlinear response and physical reasons for high efficiency of second-order nonlinear interactions in the AlGaAs nano-antennas. In particular, we emphasize the role of the dipolar resonances at the fundamental frequency and the multipolar resonances at the second harmonic wavelength. We also discuss second-harmonic generation directionality and show possible strategies to engineer the radiation pattern of nonlinear antennas.

AB - We review recent achievements in the field of nanoscale nonlinear AlGaAs photonics based on all-dielectric optical antennas. After discussing the motivation and main technological challenges for the development of an AlGaAs monolithic platform for χ (2) nonlinear nanophotonics, we present numerical and experimental investigations of the second-order nonlinear response and physical reasons for high efficiency of second-order nonlinear interactions in the AlGaAs nano-antennas. In particular, we emphasize the role of the dipolar resonances at the fundamental frequency and the multipolar resonances at the second harmonic wavelength. We also discuss second-harmonic generation directionality and show possible strategies to engineer the radiation pattern of nonlinear antennas.

KW - metamaterials

KW - optical antennas

KW - second harmonic generation

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Controlling second-harmonic generation at the nanoscale with monolithic AlGaAs-on-AlOx antennas

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Keywords

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