Optical tuning of dielectric nanoantennas for thermo-optically reconfigurable nonlinear metasurfaces

被引：42

作者：

Celebrano, Michele ^{[1
]}

Rocco, Davide ^{[2
,3
]}

Gandolfi, Marco ^{[2
,3
]}

Zilli, Attilio ^{[1
]}

Rusconi, Francesco ^{[1
]}

Tognazzi, Andrea ^{[2
]}

Mazzanti, Andrea ^{[1
]}

Ghirardini, Lavinia ^{[1
]}

Pogna, Eva A. A. ^{[1
,4
,5
]}

Carletti, Luca ^{[2
,3
]}

Baratto, Camilla ^{[3
]}

Marino, Giuseppe ^{[6
]}

Gigli, Carlo ^{[6
]}

Biagioni, Paolo ^{[1
]}

Duo, Lamberto ^{[1
]}

Cerullo, Giulio ^{[1
]}

Leo, Giuseppe ^{[6
]}

Della Valle, Giuseppe ^{[1
,7
]}

Finazzi, Marco ^{[1
]}

De Angelis, Costantino ^{[2
,3
]}

机构：

[1] Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

[2] Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy

[3] CNR, Ist Nazl Ott, Via Branze 45, I-25123 Brescia, Italy

[4] CNR, Ist Nanosci, NEST, I-56127 Pisa, Italy

[5] Scuola Normale Super Pisa, I-56127 Pisa, Italy

[6] Univ Paris, Mat & Phenomenes Quant, 10 Rue Alice Domon & Leonie Duquet, F-75013 Paris, France

[7] CNR, Ist Foton Nanotecnol, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

来源：

OPTICS LETTERS | 2021年 / 46卷 / 10期

基金：

欧盟地平线“2020”;

关键词：

ENHANCED 2ND-HARMONIC GENERATION;

D O I：

10.1364/OL.420790

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate optically tunable control of second-harmonic generation in all-dielectric nanoantennas: by using a control beam that is absorbed by the nanoresonator, we thermo-optically change the refractive index of the radiating element to modulate the amplitude of the second-harmonic signal. For a moderate temperature increase of roughly 40 K, modulation of the efficiency up to 60% is demonstrated; this large tunability of the single meta-atom response paves the way to exciting avenues for reconfigurable homogeneous and heterogeneous metasurfaces. (C) 2021 Optical Society of America

引用

页码：2453 / 2456

页数：4

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