Physical Review A

, volume 104 , issue 2 , publication number 023524

Near-unity third-harmonic circular dichroism driven by a quasibound state in the continuum in asymmetric silicon metasurfaces

Marco Gandolfi ¹

Andrea Tognazzi ¹

Lei Xu ¹

COSTANTINO DE ANGELIS ¹

C. De Angelis ¹

Luca Carletti ¹

Hide authors affiliations Show authors affiliations: 1 affiliation

CNR-INO (National Institute of Optics), Via Branze 45, Brescia, Italy and Department of Information Engineering, University of Brescia, Via Branze 38, Brescia, Italy

University of Brescia

National Institute of Optics

Publication type: Journal Article

Publication date: 2021-08-25

American Physical Society (APS)

Physical Review A

scimago Q1

wos Q2

SJR: 1.033

CiteScore: 5.1

Impact factor: 2.9

ISSN: 10502947, 10941622, 24699926, 24699934

DOI: 10.1103/PhysRevA.104.023524

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Abstract

We use numerical simulations to demonstrate third-harmonic generation with near-unity nonlinear circular dichroism (CD) and high conversion efficiency (10−2 W−2) in asymmetric Si-on-SiO2 metasurfaces. The working principle relies on the spin-selective excitation of a quasi-bound state in the continuum, characterized by a very high (> 10) quality-factor. By tuning multi-mode interference with the variation of the metasurface geometrical parameters, we show the possibility to control both linear CD and nonlinear CD. Our results pave the way for the development of all-dielectric metasurfaces for nonlinear chiro-optical devices with high conversion efficiency.

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2 citations

Makarov Sergey

DSc in Physics and Mathematics, professor

411 publications, 7 652 citations, 62 reviews

h-index: 47

ITMO University

Harbin Engineering University

1 citation

Belov Pavel

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DSc in Physics and Mathematics, associate professor, professor of the Russian Academy of Sciences

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Gandolfi M. et al. Near-unity third-harmonic circular dichroism driven by a quasibound state in the continuum in asymmetric silicon metasurfaces // Physical Review A. 2021. Vol. 104. No. 2. 023524

GOST all authors (up to 50) Copy

Gandolfi M., Tognazzi A., Xu L., DE ANGELIS C., De Angelis C., Carletti L. Near-unity third-harmonic circular dichroism driven by a quasibound state in the continuum in asymmetric silicon metasurfaces // Physical Review A. 2021. Vol. 104. No. 2. 023524

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1103/PhysRevA.104.023524

UR - https://doi.org/10.1103/PhysRevA.104.023524

TI - Near-unity third-harmonic circular dichroism driven by a quasibound state in the continuum in asymmetric silicon metasurfaces

T2 - Physical Review A

AU - Gandolfi, Marco

AU - Tognazzi, Andrea

AU - Xu, Lei

AU - DE ANGELIS, COSTANTINO

AU - De Angelis, C.

AU - Carletti, Luca

PY - 2021

DA - 2021/08/25

PB - American Physical Society (APS)

IS - 2

VL - 104

SN - 1050-2947

SN - 1094-1622

SN - 2469-9926

SN - 2469-9934

ER -

BibTex

Cite this

BibTex (up to 50 authors) Copy

@article{2021_Gandolfi,

author = {Marco Gandolfi and Andrea Tognazzi and Lei Xu and COSTANTINO DE ANGELIS and C. De Angelis and Luca Carletti},

title = {Near-unity third-harmonic circular dichroism driven by a quasibound state in the continuum in asymmetric silicon metasurfaces},

journal = {Physical Review A},

year = {2021},

volume = {104},

publisher = {American Physical Society (APS)},

month = {aug},

url = {https://doi.org/10.1103/PhysRevA.104.023524},

number = {2},

pages = {023524},

doi = {10.1103/PhysRevA.104.023524}

}

Publisher

American Physical Society (APS)

Journal

Physical Review A

scimago Q1

wos Q2

SJR

1.033

CiteScore

5.1

Impact factor

2.9

ISSN

10502947 (Print)

10941622 (Electronic)

24699926 (Print)

24699934 (Electronic)

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