Shaping the Radiation Pattern of Second-Harmonic Generation from AlGaAs Dielectric Nanoantennas

Luca Carletti; Andrea Locatelli; Dragomir Neshev; Costantino De Angelis

doi:10.1021/acsphotonics.6b00050

Shaping the Radiation Pattern of Second-Harmonic Generation from AlGaAs Dielectric Nanoantennas

Luca Carletti^*, Andrea Locatelli, Dragomir Neshev, Costantino De Angelis

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

We study the manipulation of the radiation pattern of second-harmonic generation from AlGaAs all-dielectric nanoantennas exhibiting electric and magnetic resonances. We show the importance of the interference of different higher order multipoles in the nonlinear response of dielectric antennas for shaping of their second-harmonic radiation pattern. In particular, we show how such multipolar interference can be engineered in AlGaAs nanodisks by manipulating the pump beam polarization, incidence angle, and disk geometry. In this way we demonstrate the shaping of the radiation pattern in order to increase the second-harmonic power by a factor of 8 when measured in experiment through a finite numerical aperture microscope objective.

Original language	English
Pages (from-to)	1500-1507
Number of pages	8
Journal	ACS Photonics
Volume	3
Issue number	8
DOIs	https://doi.org/10.1021/acsphotonics.6b00050
Publication status	Published - 17 Aug 2016

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title = "Shaping the Radiation Pattern of Second-Harmonic Generation from AlGaAs Dielectric Nanoantennas",

abstract = "We study the manipulation of the radiation pattern of second-harmonic generation from AlGaAs all-dielectric nanoantennas exhibiting electric and magnetic resonances. We show the importance of the interference of different higher order multipoles in the nonlinear response of dielectric antennas for shaping of their second-harmonic radiation pattern. In particular, we show how such multipolar interference can be engineered in AlGaAs nanodisks by manipulating the pump beam polarization, incidence angle, and disk geometry. In this way we demonstrate the shaping of the radiation pattern in order to increase the second-harmonic power by a factor of 8 when measured in experiment through a finite numerical aperture microscope objective.",

keywords = "nanoantennas, nonlinear scattering, radiation pattern, second-harmonic generation",

author = "Luca Carletti and Andrea Locatelli and Dragomir Neshev and {De Angelis}, Costantino",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Carletti, Luca

AU - Locatelli, Andrea

AU - Neshev, Dragomir

AU - De Angelis, Costantino

PY - 2016/8/17

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N2 - We study the manipulation of the radiation pattern of second-harmonic generation from AlGaAs all-dielectric nanoantennas exhibiting electric and magnetic resonances. We show the importance of the interference of different higher order multipoles in the nonlinear response of dielectric antennas for shaping of their second-harmonic radiation pattern. In particular, we show how such multipolar interference can be engineered in AlGaAs nanodisks by manipulating the pump beam polarization, incidence angle, and disk geometry. In this way we demonstrate the shaping of the radiation pattern in order to increase the second-harmonic power by a factor of 8 when measured in experiment through a finite numerical aperture microscope objective.

AB - We study the manipulation of the radiation pattern of second-harmonic generation from AlGaAs all-dielectric nanoantennas exhibiting electric and magnetic resonances. We show the importance of the interference of different higher order multipoles in the nonlinear response of dielectric antennas for shaping of their second-harmonic radiation pattern. In particular, we show how such multipolar interference can be engineered in AlGaAs nanodisks by manipulating the pump beam polarization, incidence angle, and disk geometry. In this way we demonstrate the shaping of the radiation pattern in order to increase the second-harmonic power by a factor of 8 when measured in experiment through a finite numerical aperture microscope objective.

KW - nanoantennas

KW - nonlinear scattering

KW - radiation pattern

KW - second-harmonic generation

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JO - ACS Photonics

JF - ACS Photonics

IS - 8

ER -

Shaping the Radiation Pattern of Second-Harmonic Generation from AlGaAs Dielectric Nanoantennas

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