An engineered planar plasmonic reflector for polaritonic mode confinement
An engineered planar plasmonic reflector for polaritonic mode confinement
It was recently demonstrated that, in deep subwavelength gap resonators coupled to two-dimensional electron gases, propagating plasmons can lead to energy leakage and prevent the formation of polaritonic resonances. This process, akin to Landau damping, limits the achievable field confinement and thus the value of light-matter coupling strength. In this work, we show how plasmonic reflectors can be used to create an artificial energy stopband in the plasmon dispersion, confining them and enabling the recovery of the polaritonic resonances. Using this approach we demonstrate a normalized light-matter coupling ratio of ΩR/
ω0 = 0.36 employing a single doped quantum well with a resonator's gap size of 250 nm equivalent to λ/3000 in vacuum, a geometry in which the polaritonic resonances would not be observable in the absence of the plasmonic reflectors.
Rajabali, Shima
3aae6258-1ae0-4bb8-bfcb-9ac3ce960833
Enkner, Josefine
3eb3de48-4334-4e49-a6c4-94e297ec4b39
Cortese, Erika
3a7d67d1-3321-40b2-91fa-2471dbed7147
Beck, Mattias
2934c3e3-b900-4811-b60c-d2e51f1b189d
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Fast, Jerome
651bf4b6-f9af-472d-9d0f-f62ab0530a01
Scalari, Giacomo
5f11699f-1792-4884-ad48-48b16e796c02
Rajabali, Shima
3aae6258-1ae0-4bb8-bfcb-9ac3ce960833
Enkner, Josefine
3eb3de48-4334-4e49-a6c4-94e297ec4b39
Cortese, Erika
3a7d67d1-3321-40b2-91fa-2471dbed7147
Beck, Mattias
2934c3e3-b900-4811-b60c-d2e51f1b189d
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Fast, Jerome
651bf4b6-f9af-472d-9d0f-f62ab0530a01
Scalari, Giacomo
5f11699f-1792-4884-ad48-48b16e796c02
Rajabali, Shima, Enkner, Josefine, Cortese, Erika, Beck, Mattias, De Liberato, Simone, Fast, Jerome and Scalari, Giacomo
(2023)
An engineered planar plasmonic reflector for polaritonic mode confinement.
Optical Materials Express.
(In Press)
Abstract
It was recently demonstrated that, in deep subwavelength gap resonators coupled to two-dimensional electron gases, propagating plasmons can lead to energy leakage and prevent the formation of polaritonic resonances. This process, akin to Landau damping, limits the achievable field confinement and thus the value of light-matter coupling strength. In this work, we show how plasmonic reflectors can be used to create an artificial energy stopband in the plasmon dispersion, confining them and enabling the recovery of the polaritonic resonances. Using this approach we demonstrate a normalized light-matter coupling ratio of ΩR/
ω0 = 0.36 employing a single doped quantum well with a resonator's gap size of 250 nm equivalent to λ/3000 in vacuum, a geometry in which the polaritonic resonances would not be observable in the absence of the plasmonic reflectors.
Text
Plamonic_reflector
- Accepted Manuscript
More information
Accepted/In Press date: 12 September 2023
Identifiers
Local EPrints ID: 482708
URI: http://eprints.soton.ac.uk/id/eprint/482708
ISSN: 2159-3930
PURE UUID: 598b4c20-90aa-4f11-a9cd-2ddd083e39d7
Catalogue record
Date deposited: 11 Oct 2023 16:55
Last modified: 18 Mar 2024 03:25
Export record
Contributors
Author:
Shima Rajabali
Author:
Josefine Enkner
Author:
Mattias Beck
Author:
Jerome Fast
Author:
Giacomo Scalari
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
