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Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon

The optical excitation and propagation of converging surface acoustic waves on silicon with orientations (001) and (111) have been experimentally studied. An axicon-assisted formation of an annular irradiated region on the sample surface served as a source for converging surface waves. Surface wave...

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Autores principales: Klokov, Andrey Y., Krivobok, Vladimir S., Sharkov, Andrey I., Frolov, Nikolay Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8840341/
https://www.ncbi.nlm.nih.gov/pubmed/35161618
http://dx.doi.org/10.3390/s22030870
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author Klokov, Andrey Y.
Krivobok, Vladimir S.
Sharkov, Andrey I.
Frolov, Nikolay Y.
author_facet Klokov, Andrey Y.
Krivobok, Vladimir S.
Sharkov, Andrey I.
Frolov, Nikolay Y.
author_sort Klokov, Andrey Y.
collection PubMed
description The optical excitation and propagation of converging surface acoustic waves on silicon with orientations (001) and (111) have been experimentally studied. An axicon-assisted formation of an annular irradiated region on the sample surface served as a source for converging surface waves. Surface wave patterns at different times were recorded using a Sagnac interferometer with spatial resolution. A study of the field distribution at the focus showed that, in spite of elastic anisotropy, which generally leads to aberrations, the acoustic energy can be concentrated into a spot with dimensions close to the diffraction limit. An asymmetric excitation distribution makes it possible to control the structure of the converged wave field at the focus, providing an effective tool for all-optical diagnostics of the local crystal structure as well as electronic properties of quantum objects embedded in the solid-state matrix.
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spelling pubmed-88403412022-02-13 Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon Klokov, Andrey Y. Krivobok, Vladimir S. Sharkov, Andrey I. Frolov, Nikolay Y. Sensors (Basel) Article The optical excitation and propagation of converging surface acoustic waves on silicon with orientations (001) and (111) have been experimentally studied. An axicon-assisted formation of an annular irradiated region on the sample surface served as a source for converging surface waves. Surface wave patterns at different times were recorded using a Sagnac interferometer with spatial resolution. A study of the field distribution at the focus showed that, in spite of elastic anisotropy, which generally leads to aberrations, the acoustic energy can be concentrated into a spot with dimensions close to the diffraction limit. An asymmetric excitation distribution makes it possible to control the structure of the converged wave field at the focus, providing an effective tool for all-optical diagnostics of the local crystal structure as well as electronic properties of quantum objects embedded in the solid-state matrix. MDPI 2022-01-24 /pmc/articles/PMC8840341/ /pubmed/35161618 http://dx.doi.org/10.3390/s22030870 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Klokov, Andrey Y.
Krivobok, Vladimir S.
Sharkov, Andrey I.
Frolov, Nikolay Y.
Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title_full Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title_fullStr Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title_full_unstemmed Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title_short Optical Excitation of Converging Surface Acoustic Waves in the Gigahertz Range on Silicon
title_sort optical excitation of converging surface acoustic waves in the gigahertz range on silicon
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8840341/
https://www.ncbi.nlm.nih.gov/pubmed/35161618
http://dx.doi.org/10.3390/s22030870
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