Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas

Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas

High-permittivity III-V semiconductor nanocavities have shown huge potential for enhanced nonlinear light-matter interactions at the nanoscale. In particular, Second Harmonic (SH) generation in AlGaAs nanoantennas can be extremely efficient; however, vertical emission is difficult to achieve, due to...

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Bibliographic Details
Main Authors: Davide Rocco, Carlo Gigli, Luca Carletti, Giuseppe Marino, Maria Antonietta Vincenti, Giuseppe Leo, Costantino De Angelis
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Photonics Journal
Subjects:
Nonlinear optics devices
optical harmonic generation
optical resonator
Online Access:https://ieeexplore.ieee.org/document/9072497/
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spelling doaj-c466a030a00d42ea927277342746d0a92021-03-29T18:00:32ZengIEEEIEEE Photonics Journal1943-06552020-01-011231710.1109/JPHOT.2020.29885029072497Vertical Second Harmonic Generation in Asymmetric Dielectric NanoantennasDavide Rocco0https://orcid.org/0000-0002-5678-0531Carlo Gigli1https://orcid.org/0000-0001-8327-0425Luca Carletti2Giuseppe Marino3https://orcid.org/0000-0001-8979-051XMaria Antonietta Vincenti4https://orcid.org/0000-0001-6698-2973Giuseppe Leo5Costantino De Angelis6https://orcid.org/0000-0001-8029-179XDepartment of Information Engineering, University of Brescia, Brescia, ItalyMatériaux et Phénomènes Quantiques, Universit&#x00E9; de Paris, Paris, FranceDepartment of Information Engineering, University of Padova, Padova, ItalyMatériaux et Phénomènes Quantiques, Universit&#x00E9; de Paris, Paris, FranceDepartment of Information Engineering, University of Brescia, Brescia, ItalyMatériaux et Phénomènes Quantiques, Universit&#x00E9; de Paris, Paris, FranceDepartment of Information Engineering, University of Brescia, Brescia, ItalyHigh-permittivity III-V semiconductor nanocavities have shown huge potential for enhanced nonlinear light-matter interactions at the nanoscale. In particular, Second Harmonic (SH) generation in AlGaAs nanoantennas can be extremely efficient; however, vertical emission is difficult to achieve, due to the zincblende &#x03C7;<sup>(2)</sup> tensor and epitaxially growth on (100) substrates. Here, we demonstrate that we can shape the second harmonic radiation pattern from a single AlGaAs nanostructure by exploiting a geometrical symmetry breaking optimization approach. The optimized design allows to redirect the SH signal toward the normal direction and to increase the SH power collection efficiency by 2 orders of magnitude in a small numerical aperture of 0.1 with respect to the symmetrical counterpart structure.https://ieeexplore.ieee.org/document/9072497/Nonlinear optics devicesoptical harmonic generationoptical resonator
collection DOAJ
language English
format Article
sources DOAJ
author Davide Rocco
Carlo Gigli
Luca Carletti
Giuseppe Marino
Maria Antonietta Vincenti
Giuseppe Leo
Costantino De Angelis
spellingShingle Davide Rocco
Carlo Gigli
Luca Carletti
Giuseppe Marino
Maria Antonietta Vincenti
Giuseppe Leo
Costantino De Angelis
Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
IEEE Photonics Journal
Nonlinear optics devices
optical harmonic generation
optical resonator
author_facet Davide Rocco
Carlo Gigli
Luca Carletti
Giuseppe Marino
Maria Antonietta Vincenti
Giuseppe Leo
Costantino De Angelis
author_sort Davide Rocco
title Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
title_short Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
title_full Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
title_fullStr Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
title_full_unstemmed Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
title_sort vertical second harmonic generation in asymmetric dielectric nanoantennas
publisher IEEE
series IEEE Photonics Journal
issn 1943-0655
publishDate 2020-01-01
description High-permittivity III-V semiconductor nanocavities have shown huge potential for enhanced nonlinear light-matter interactions at the nanoscale. In particular, Second Harmonic (SH) generation in AlGaAs nanoantennas can be extremely efficient; however, vertical emission is difficult to achieve, due to the zincblende &#x03C7;<sup>(2)</sup> tensor and epitaxially growth on (100) substrates. Here, we demonstrate that we can shape the second harmonic radiation pattern from a single AlGaAs nanostructure by exploiting a geometrical symmetry breaking optimization approach. The optimized design allows to redirect the SH signal toward the normal direction and to increase the SH power collection efficiency by 2 orders of magnitude in a small numerical aperture of 0.1 with respect to the symmetrical counterpart structure.
topic Nonlinear optics devices
optical harmonic generation
optical resonator
url https://ieeexplore.ieee.org/document/9072497/
work_keys_str_mv AT daviderocco verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT carlogigli verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT lucacarletti verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT giuseppemarino verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT mariaantoniettavincenti verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT giuseppeleo verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
AT costantinodeangelis verticalsecondharmonicgenerationinasymmetricdielectricnanoantennas
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