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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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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. |
format | Online Article Text |
id | pubmed-8840341 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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