Shaping the Nonlinear Emission Pattern of a Dielectric Nanoantenna by Integrated Holographic Gratings

Lavinia Ghirardini; Giuseppe Marino; Valerio F. Gili; Ivan Favero; Davide Rocco; Luca Carletti; Andrea Locatelli; Costantino De Angelis; Marco Finazzi; Michele Celebrano; Dragomir N. Neshev; Giuseppe Leo

doi:10.1021/acs.nanolett.8b02432

Shaping the Nonlinear Emission Pattern of a Dielectric Nanoantenna by Integrated Holographic Gratings

Lavinia Ghirardini, Giuseppe Marino, Valerio F. Gili, Ivan Favero, Davide Rocco, Luca Carletti, Andrea Locatelli, Costantino De Angelis, Marco Finazzi, Michele Celebrano, Dragomir N. Neshev, Giuseppe Leo^*

^*Corresponding author for this work

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

30 Citations (Scopus)

Abstract

We demonstrate the shaping of the second-harmonic (SH) radiation pattern from a single AlGaAs nanodisk antenna using coplanar holographic gratings. The SH radiation emitted from the antenna toward the - otherwise forbidden - normal direction can be effectively redirected by suitably shifting the phase of the grating pattern in the azimuthal direction. The use of such gratings allows increasing the SH power collection efficiency by 2 orders of magnitude with respect to an isolated antenna and demonstrates the possibility of intensity-tailoring for an arbitrary collection angle. Such reconstruction of the nonlinear emission from nanoscale antennas represents the first step toward the application of all-dielectric nanostructures for nonlinear holography.

Original language	English
Pages (from-to)	6750-6755
Number of pages	6
Journal	Nano Letters
Volume	18
Issue number	11
DOIs	https://doi.org/10.1021/acs.nanolett.8b02432
Publication status	Published - 14 Nov 2018

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title = "Shaping the Nonlinear Emission Pattern of a Dielectric Nanoantenna by Integrated Holographic Gratings",

abstract = "We demonstrate the shaping of the second-harmonic (SH) radiation pattern from a single AlGaAs nanodisk antenna using coplanar holographic gratings. The SH radiation emitted from the antenna toward the - otherwise forbidden - normal direction can be effectively redirected by suitably shifting the phase of the grating pattern in the azimuthal direction. The use of such gratings allows increasing the SH power collection efficiency by 2 orders of magnitude with respect to an isolated antenna and demonstrates the possibility of intensity-tailoring for an arbitrary collection angle. Such reconstruction of the nonlinear emission from nanoscale antennas represents the first step toward the application of all-dielectric nanostructures for nonlinear holography.",

keywords = "Second harmonic generation, beaming, collection efficiency, gratings, nonlinear nanoantennas",

author = "Lavinia Ghirardini and Giuseppe Marino and Gili, {Valerio F.} and Ivan Favero and Davide Rocco and Luca Carletti and Andrea Locatelli and {De Angelis}, Costantino and Marco Finazzi and Michele Celebrano and Neshev, {Dragomir N.} and Giuseppe Leo",

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doi = "10.1021/acs.nanolett.8b02432",

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T1 - Shaping the Nonlinear Emission Pattern of a Dielectric Nanoantenna by Integrated Holographic Gratings

AU - Ghirardini, Lavinia

AU - Marino, Giuseppe

AU - Gili, Valerio F.

AU - Favero, Ivan

AU - Rocco, Davide

AU - Carletti, Luca

AU - Locatelli, Andrea

AU - De Angelis, Costantino

AU - Finazzi, Marco

AU - Celebrano, Michele

AU - Neshev, Dragomir N.

AU - Leo, Giuseppe

PY - 2018/11/14

Y1 - 2018/11/14

N2 - We demonstrate the shaping of the second-harmonic (SH) radiation pattern from a single AlGaAs nanodisk antenna using coplanar holographic gratings. The SH radiation emitted from the antenna toward the - otherwise forbidden - normal direction can be effectively redirected by suitably shifting the phase of the grating pattern in the azimuthal direction. The use of such gratings allows increasing the SH power collection efficiency by 2 orders of magnitude with respect to an isolated antenna and demonstrates the possibility of intensity-tailoring for an arbitrary collection angle. Such reconstruction of the nonlinear emission from nanoscale antennas represents the first step toward the application of all-dielectric nanostructures for nonlinear holography.

AB - We demonstrate the shaping of the second-harmonic (SH) radiation pattern from a single AlGaAs nanodisk antenna using coplanar holographic gratings. The SH radiation emitted from the antenna toward the - otherwise forbidden - normal direction can be effectively redirected by suitably shifting the phase of the grating pattern in the azimuthal direction. The use of such gratings allows increasing the SH power collection efficiency by 2 orders of magnitude with respect to an isolated antenna and demonstrates the possibility of intensity-tailoring for an arbitrary collection angle. Such reconstruction of the nonlinear emission from nanoscale antennas represents the first step toward the application of all-dielectric nanostructures for nonlinear holography.

KW - Second harmonic generation

KW - beaming

KW - collection efficiency

KW - gratings

KW - nonlinear nanoantennas

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U2 - 10.1021/acs.nanolett.8b02432

DO - 10.1021/acs.nanolett.8b02432

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VL - 18

SP - 6750

EP - 6755

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

Shaping the Nonlinear Emission Pattern of a Dielectric Nanoantenna by Integrated Holographic Gratings

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