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Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes

Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes
Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes
We experimentally investigate second harmonic generation from strongly coupled localized and propagative phonon polariton modes in arrays of silicon carbide nanopillars. Our results clearly demonstrate the hybrid nature of the system's eigenmodes and distinct manifestation of strong coupling in the linear and nonlinear response. While in linear reflectivity the intensity of the two strongly-coupled branches is essentially symmetric and well explained by their respective localized or propagative components, the second harmonic signal presents a strong asymmetry. Analyzing it in detail, we reveal the importance of interference effects between the nonlinear polarization terms originating in the bulk and in the phonon polariton modes.
cond-mat.mes-hall, physics.optics
1550-235X
Razdolski, Ilya
74907f98-c805-4c27-9c6d-c89db462cda5
Passler, Nikolai Christian
4ee2c4e6-719a-480d-83d2-721b461d8877
Gubbin, Christopher R.
09b75073-7a9a-4443-9a84-1458ec2535e9
Winta, Christopher J.
cd2f9f49-0f22-4371-ba27-4fa6c1a74806
Cernansky, Robert
8ccb162e-f8ee-4209-a5aa-e9a79e80b919
Martini, Francesco
394af6a7-dbcf-4d7b-9add-f7ed80bfe020
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Maier, Stefan A.
950db919-e145-48b5-bd73-196de02e46fe
Wolf, Martin
8e4f5dc4-02c9-4b96-b312-daff6004618d
Paarmann, Alexander
9699aa61-532e-4947-80ea-278f81be011a
Liberato, Simone De
5942e45f-3115-4027-8653-a82667ed8473
Razdolski, Ilya
74907f98-c805-4c27-9c6d-c89db462cda5
Passler, Nikolai Christian
4ee2c4e6-719a-480d-83d2-721b461d8877
Gubbin, Christopher R.
09b75073-7a9a-4443-9a84-1458ec2535e9
Winta, Christopher J.
cd2f9f49-0f22-4371-ba27-4fa6c1a74806
Cernansky, Robert
8ccb162e-f8ee-4209-a5aa-e9a79e80b919
Martini, Francesco
394af6a7-dbcf-4d7b-9add-f7ed80bfe020
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Maier, Stefan A.
950db919-e145-48b5-bd73-196de02e46fe
Wolf, Martin
8e4f5dc4-02c9-4b96-b312-daff6004618d
Paarmann, Alexander
9699aa61-532e-4947-80ea-278f81be011a
Liberato, Simone De
5942e45f-3115-4027-8653-a82667ed8473

Razdolski, Ilya, Passler, Nikolai Christian, Gubbin, Christopher R., Winta, Christopher J., Cernansky, Robert, Martini, Francesco, Politi, Alberto, Maier, Stefan A., Wolf, Martin, Paarmann, Alexander and Liberato, Simone De (2018) Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes. Physical Review B.

Record type: Article

Abstract

We experimentally investigate second harmonic generation from strongly coupled localized and propagative phonon polariton modes in arrays of silicon carbide nanopillars. Our results clearly demonstrate the hybrid nature of the system's eigenmodes and distinct manifestation of strong coupling in the linear and nonlinear response. While in linear reflectivity the intensity of the two strongly-coupled branches is essentially symmetric and well explained by their respective localized or propagative components, the second harmonic signal presents a strong asymmetry. Analyzing it in detail, we reveal the importance of interference effects between the nonlinear polarization terms originating in the bulk and in the phonon polariton modes.

Text
Razdolski_SHG_SPhP_coupling_R1_1 - Accepted Manuscript
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More information

Accepted/In Press date: 6 September 2018
e-pub ahead of print date: 26 September 2018
Additional Information: 7 pages, 4 figures
Keywords: cond-mat.mes-hall, physics.optics

Identifiers

Local EPrints ID: 423138
URI: https://eprints.soton.ac.uk/id/eprint/423138
ISSN: 1550-235X
PURE UUID: e09af261-835f-45a1-9af0-8635564860e5
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

Catalogue record

Date deposited: 19 Sep 2018 11:04
Last modified: 08 Jun 2019 00:29

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