Polarization properties of Raman scattering by surface phonon polaritons in GaAsP nanowires

Rybchenko, Sergey I.; Ali, Sarfraz; Zhang, Yunyan; Liu, Huiyun

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.

Citation

Rybchenko, S. I., 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. https://doi.org/10.1088/1361-6463/ac2400

• Journal Article Type: Article
• Acceptance Date: Sep 6, 2021
• Online Publication Date: Sep 16, 2021
• Publication Date: Nov 25, 2021
• Deposit Date: Jun 27, 2024
• Publicly Available Date: Jul 2, 2024
• Journal: Journal of Physics D: Applied Physics
• Print ISSN: 0022-3727
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 54
• Issue: 47
• Article Number: 475109
• DOI: https://doi.org/10.1088/1361-6463/ac2400
• Keywords: Surfaces, Coatings and Films; Acoustics and Ultrasonics; Condensed Matter Physics; Electronic, Optical and Magnetic Materials
• Public URL: https://hull-repository.worktribe.com/output/3839058