Superbackscattering from single dielectric particles

Inigo Liberal, Inigo Ederra, Ramón Gonzalo, Richard W Ziolkowski

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We demonstrate that superbackscattering responses can be excited in subwavelength dielectric particles with simple geometries. The superbackscattering response arises from the simultaneous, coherent excitation of electric dipole and magnetic quadrupole resonances. Its signature is a superdirective scattering pattern simultaneously pointing towards both the forward and backward directions. The practical implementation of this effect with Tellurium particles operating in the thermal infrared is also addressed. The examples presented reveal that spherical resonators outperform array-based superbackscatterers in terms of the backscattering peak, compact size, robustness against losses and isotropic response.

Original languageEnglish (US)
Article number072001
JournalJournal of Optics
Volume17
Issue number7
DOIs
StatePublished - Jul 1 2015

Fingerprint

Tellurium
Backscattering
Resonators
Scattering
Infrared radiation
Geometry
tellurium
electric dipoles
backscattering
quadrupoles
resonators
signatures
geometry
scattering
excitation
Hot Temperature
Direction compound

Keywords

  • backscattering
  • scattering
  • superdirective

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

Cite this

Superbackscattering from single dielectric particles. / Liberal, Inigo; Ederra, Inigo; Gonzalo, Ramón; Ziolkowski, Richard W.

In: Journal of Optics, Vol. 17, No. 7, 072001, 01.07.2015.

Research output: Contribution to journalArticle

Liberal, Inigo ; Ederra, Inigo ; Gonzalo, Ramón ; Ziolkowski, Richard W. / Superbackscattering from single dielectric particles. In: Journal of Optics. 2015 ; Vol. 17, No. 7.
@article{0d73edc55cae45dd9262974137396599,
title = "Superbackscattering from single dielectric particles",
abstract = "We demonstrate that superbackscattering responses can be excited in subwavelength dielectric particles with simple geometries. The superbackscattering response arises from the simultaneous, coherent excitation of electric dipole and magnetic quadrupole resonances. Its signature is a superdirective scattering pattern simultaneously pointing towards both the forward and backward directions. The practical implementation of this effect with Tellurium particles operating in the thermal infrared is also addressed. The examples presented reveal that spherical resonators outperform array-based superbackscatterers in terms of the backscattering peak, compact size, robustness against losses and isotropic response.",
keywords = "backscattering, scattering, superdirective",
author = "Inigo Liberal and Inigo Ederra and Ram{\'o}n Gonzalo and Ziolkowski, {Richard W}",
year = "2015",
month = "7",
day = "1",
doi = "10.1088/2040-8978/17/7/072001",
language = "English (US)",
volume = "17",
journal = "Journal of Optics",
issn = "2040-8978",
publisher = "IOP Publishing Ltd.",
number = "7",

}

TY - JOUR

T1 - Superbackscattering from single dielectric particles

AU - Liberal, Inigo

AU - Ederra, Inigo

AU - Gonzalo, Ramón

AU - Ziolkowski, Richard W

PY - 2015/7/1

Y1 - 2015/7/1

N2 - We demonstrate that superbackscattering responses can be excited in subwavelength dielectric particles with simple geometries. The superbackscattering response arises from the simultaneous, coherent excitation of electric dipole and magnetic quadrupole resonances. Its signature is a superdirective scattering pattern simultaneously pointing towards both the forward and backward directions. The practical implementation of this effect with Tellurium particles operating in the thermal infrared is also addressed. The examples presented reveal that spherical resonators outperform array-based superbackscatterers in terms of the backscattering peak, compact size, robustness against losses and isotropic response.

AB - We demonstrate that superbackscattering responses can be excited in subwavelength dielectric particles with simple geometries. The superbackscattering response arises from the simultaneous, coherent excitation of electric dipole and magnetic quadrupole resonances. Its signature is a superdirective scattering pattern simultaneously pointing towards both the forward and backward directions. The practical implementation of this effect with Tellurium particles operating in the thermal infrared is also addressed. The examples presented reveal that spherical resonators outperform array-based superbackscatterers in terms of the backscattering peak, compact size, robustness against losses and isotropic response.

KW - backscattering

KW - scattering

KW - superdirective

UR - http://www.scopus.com/inward/record.url?scp=84936797963&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84936797963&partnerID=8YFLogxK

U2 - 10.1088/2040-8978/17/7/072001

DO - 10.1088/2040-8978/17/7/072001

M3 - Article

VL - 17

JO - Journal of Optics

JF - Journal of Optics

SN - 2040-8978

IS - 7

M1 - 072001

ER -