Rybchenko, SI;
Ali, S;
Zhang, Y;
Liu, H;
(2021)
Polarization properties of Raman scattering by surface phonon polaritons in GaAsP nanowires.
Journal of Physics D: Applied Physics
, 54
(47)
, Article 475109. 10.1088/1361-6463/ac2400.
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Abstract
Strong resonant enhancement of Raman scattering on photonic resonance was observed in GaAsP semiconductor nanowires. The enhancement allowed for detailed studies of the surface phonon polariton (SPhP) scattering peak on individual nanowires. In particular, for the first time, the effect of the nanowire cross section shape on SPhP properties has been investigated. It was found that the cross section flattening induces a strong polarisation and a spectral shift of SPhPs supported by such nanowire. The assisting numerical simulations allowed to link the induced polarisation effect to a splitting of the resonant HE11 mode in the flattened nanowire. The observed spectral shift of SPhP has been also theoretically reproduced in elliptical approximation for the flattened cross section. The obtained results pave a ground for engineering of SPhP polarisation response and accurate spectral control of SPhPs in applications utilising the nanowire morphology.
| Type: | Article |
|---|---|
| Title: | Polarization properties of Raman scattering by surface phonon polaritons in GaAsP nanowires |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6463/ac2400 |
| Publisher version: | https://doi.org/10.1088/1361-6463/ac2400 |
| Language: | English |
| Additional information: | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10134792 |
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