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Strong coupling of epsilon-near-zero phonon polaritons in polar dielectric heterostructures

Strong coupling of epsilon-near-zero phonon polaritons in polar dielectric heterostructures
Strong coupling of epsilon-near-zero phonon polaritons in polar dielectric heterostructures

We report the first observation of epsilon-near-zero (ENZ) phonon polaritons in an ultrathin AlN film fully hybridized with surface phonon polaritons (SPhP) supported by the adjacent SiC substrate. Employing a strong coupling model for the analysis of the dispersion and electric field distribution in these hybridized modes, we show that they share the most prominent features of the two precursor modes. The novel ENZ-SPhP coupled polaritons with a highly propagative character and deeply subwavelength light confinement can be utilized as building blocks for future infrared and terahertz nanophotonic integration and communication devices.

epsilon-near-zero, hybridization, infrared, nanophotonics, polar crystal, strong coupling, Surface phonon polariton
1530-6984
4285-4292
Passler, Nikolai Christian
4ee2c4e6-719a-480d-83d2-721b461d8877
Gubbin, Christopher R.
09b75073-7a9a-4443-9a84-1458ec2535e9
Folland, Thomas Graeme
c76f06dc-e9c4-4fb0-9344-ec54e320b7b1
Razdolski, Ilya
74907f98-c805-4c27-9c6d-c89db462cda5
Katzer, D. Scott
1255f8f0-e576-484d-96ae-96c04948ff5e
Storm, David F.
f8e760d8-db5b-44a4-8d92-e258776e51a9
Wolf, Martin
8e4f5dc4-02c9-4b96-b312-daff6004618d
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Caldwell, Joshua D.
a1eb4205-8a65-48cb-9e7b-4213d744970e
Paarmann, Alexander
9699aa61-532e-4947-80ea-278f81be011a
Passler, Nikolai Christian
4ee2c4e6-719a-480d-83d2-721b461d8877
Gubbin, Christopher R.
09b75073-7a9a-4443-9a84-1458ec2535e9
Folland, Thomas Graeme
c76f06dc-e9c4-4fb0-9344-ec54e320b7b1
Razdolski, Ilya
74907f98-c805-4c27-9c6d-c89db462cda5
Katzer, D. Scott
1255f8f0-e576-484d-96ae-96c04948ff5e
Storm, David F.
f8e760d8-db5b-44a4-8d92-e258776e51a9
Wolf, Martin
8e4f5dc4-02c9-4b96-b312-daff6004618d
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Caldwell, Joshua D.
a1eb4205-8a65-48cb-9e7b-4213d744970e
Paarmann, Alexander
9699aa61-532e-4947-80ea-278f81be011a

Passler, Nikolai Christian, Gubbin, Christopher R., Folland, Thomas Graeme, Razdolski, Ilya, Katzer, D. Scott, Storm, David F., Wolf, Martin, De Liberato, Simone, Caldwell, Joshua D. and Paarmann, Alexander (2018) Strong coupling of epsilon-near-zero phonon polaritons in polar dielectric heterostructures. Nano Letters, 18 (7), 4285-4292. (doi:10.1021/acs.nanolett.8b01273).

Record type: Article

Abstract

We report the first observation of epsilon-near-zero (ENZ) phonon polaritons in an ultrathin AlN film fully hybridized with surface phonon polaritons (SPhP) supported by the adjacent SiC substrate. Employing a strong coupling model for the analysis of the dispersion and electric field distribution in these hybridized modes, we show that they share the most prominent features of the two precursor modes. The novel ENZ-SPhP coupled polaritons with a highly propagative character and deeply subwavelength light confinement can be utilized as building blocks for future infrared and terahertz nanophotonic integration and communication devices.

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e-pub ahead of print date: 12 June 2018
Published date: 11 July 2018
Keywords: epsilon-near-zero, hybridization, infrared, nanophotonics, polar crystal, strong coupling, Surface phonon polariton

Identifiers

Local EPrints ID: 423489
URI: https://eprints.soton.ac.uk/id/eprint/423489
ISSN: 1530-6984
PURE UUID: 6bb66a4b-9b79-43fc-82ee-6273561a36e1
ORCID for Christopher R. Gubbin: ORCID iD orcid.org/0000-0003-3988-028X
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

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Date deposited: 24 Sep 2018 16:30
Last modified: 13 Jun 2019 04:01

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Contributors

Author: Nikolai Christian Passler
Author: Christopher R. Gubbin ORCID iD
Author: Thomas Graeme Folland
Author: Ilya Razdolski
Author: D. Scott Katzer
Author: David F. Storm
Author: Martin Wolf
Author: Joshua D. Caldwell
Author: Alexander Paarmann

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