Gillibert, R, Malerba, M, Spirito, D et al. (7 more authors) (2020) Nanospectroscopy of a single patch antenna strongly coupled to a mid-infrared intersubband transition in a quantum well. Applied Physics Letters, 117 (10). 101104. ISSN 0003-6951
Abstract
Scanning-probe-assisted mid-infrared nano-spectroscopy is employed to reveal the polaritonic dispersion of individual MIM (metalinsulator-metal) square patch antennas whose modes can be strongly coupled to a mid-infrared intersubband transition. The patch antenna side length L sets the resonances between k ¼ 5.5 lm and 12.5 lm. The active region consists of a highly doped AlInAs/InGaAs/ AlInAs single quantum well that presents an intersubband transition at 1190 cm1 (k ¼ 8.4 lm). When the patch antenna optical resonance approaches and matches the intersubband transition frequency (L 1.8 lm), a clear anticrossing behavior—evidence of strong coupling—is observed in the near-field scattering phase spectra of individual antennas. The measured Rabi splitting is 4.5 THz. The near-field scattering spectra agree with the far-field extinction spectra acquired on arrays of identical antennas.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Published under license by AIP Publishing. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM) > Specialist Science Education Dept (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/P021859/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Nov 2020 20:18 |
Last Modified: | 10 Sep 2021 00:38 |
Status: | Published |
Publisher: | AIP Publishing |
Identification Number: | 10.1063/5.0018865 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167428 |