Polarization properties of second-harmonic generation in AlGaAs optical nanoantennas

被引：53

作者：

Ghirardini, L. ^{[1
]}

Carletti, L. ^{[2
]}

Gili, V. ^{[3
]}

Pellegrini, G. ^{[1
]}

Duò, L. ^{[1
]}

Finazzi, M. ^{[1
]}

Rocco, D. ^{[2
]}

Locatelli, A. ^{[2
]}

De Angelis, C. ^{[2
]}

Favero, I. ^{[3
]}

Ravaro, M. ^{[3
]}

Leo, G. ^{[3
]}

Lemaitre, A. ^{[4
]}

Celebrano, M. ^{[1
]}

机构：

[1] Politecn Milan, Dept Phys, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy

[2] Univ Brescia, Dept Informat Engn, Via Branze 38, I-25123 Brescia, Italy

[3] Univ Paris Diderot, Sorbonne Paris Cite, Mat & Phenomenes Quant, 10 Rue A Domon & L Duquet, F-75013 Paris, France

[4] CNRS UMR9001, Ctr Nanosci & Nanotechnol, Route Nozay, F-91460 Marcoussis, France

来源：

OPTICS LETTERS | 2017年 / 42卷 / 03期

关键词：

DIELECTRIC METASURFACES; 3RD-HARMONIC GENERATION; PLASMONIC NANOANTENNAS; BAND-GAP; METAMATERIALS; MODE;

D O I：

10.1364/OL.42.000559

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Manipulating light at the nanoscale by means of dielectric nanoantennas recently received renewed attention thanks to the development of key enabling fabrication tools in semiconductor technology, combined with the extremely low losses exhibited by dielectrics in the optical regime. Nanostructures based on III-V type semiconductors, characterized by an intrinsic broken symmetry down to a single elementary cell, has already demonstrated remarkable nonlinear conversion efficiencies at scales well below the operating wavelength. In this Letter, we thoroughly investigate the emission properties of second-harmonic generation (SHG) in AlGaAs monolithic nanoantennas. Our findings point toward the pivotal role of volume susceptibility in SHG, further unraveling the physics behind the nonlinear processes in these systems. The extremely high SHG efficiency attained, together with the control over the polarized emission in these nanoantennas, constitute key ingredients for the development of tunable nonlinear metasurfaces. (C) 2017 Optical Society of America

引用

页码：559 / 562

页数：4

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