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Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms

We report zero-th and high-order acoustic Bessel beams with broad depth-of-field generated using acoustic holograms. While the transverse field distribution of Bessel beams generated using traditional passive methods is correctly described by a Bessel function, these methods present a common drawbac...

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Autores principales: Jiménez-Gambín, Sergio, Jiménez, Noé, Benlloch, José M., Camarena, Francisco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934506/
https://www.ncbi.nlm.nih.gov/pubmed/31882678
http://dx.doi.org/10.1038/s41598-019-56369-z
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author Jiménez-Gambín, Sergio
Jiménez, Noé
Benlloch, José M.
Camarena, Francisco
author_facet Jiménez-Gambín, Sergio
Jiménez, Noé
Benlloch, José M.
Camarena, Francisco
author_sort Jiménez-Gambín, Sergio
collection PubMed
description We report zero-th and high-order acoustic Bessel beams with broad depth-of-field generated using acoustic holograms. While the transverse field distribution of Bessel beams generated using traditional passive methods is correctly described by a Bessel function, these methods present a common drawback: the axial distribution of the field is not constant, as required for ideal Bessel beams. In this work, we experimentally, numerically and theoretically report acoustic truncated Bessel beams of flat-intensity along their axis in the ultrasound regime using phase-only holograms. In particular, the beams present a uniform field distribution showing an elongated focal length of about 40 wavelengths, while the transverse width of the beam remains smaller than 0.7 wavelengths. The proposed acoustic holograms were compared with 3D-printed fraxicons, a blazed version of axicons. The performance of both phase-only holograms and fraxicons is studied and we found that both lenses produce Bessel beams in a wide range of frequencies. In addition, high-order Bessel beam were generated. We report first order Bessel beams that show a clear phase dislocation along their axis and a vortex with single topological charge. The proposed method may have potential applications in ultrasonic imaging, biomedical ultrasound and particle manipulation applications using passive lenses.
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spelling pubmed-69345062019-12-29 Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms Jiménez-Gambín, Sergio Jiménez, Noé Benlloch, José M. Camarena, Francisco Sci Rep Article We report zero-th and high-order acoustic Bessel beams with broad depth-of-field generated using acoustic holograms. While the transverse field distribution of Bessel beams generated using traditional passive methods is correctly described by a Bessel function, these methods present a common drawback: the axial distribution of the field is not constant, as required for ideal Bessel beams. In this work, we experimentally, numerically and theoretically report acoustic truncated Bessel beams of flat-intensity along their axis in the ultrasound regime using phase-only holograms. In particular, the beams present a uniform field distribution showing an elongated focal length of about 40 wavelengths, while the transverse width of the beam remains smaller than 0.7 wavelengths. The proposed acoustic holograms were compared with 3D-printed fraxicons, a blazed version of axicons. The performance of both phase-only holograms and fraxicons is studied and we found that both lenses produce Bessel beams in a wide range of frequencies. In addition, high-order Bessel beam were generated. We report first order Bessel beams that show a clear phase dislocation along their axis and a vortex with single topological charge. The proposed method may have potential applications in ultrasonic imaging, biomedical ultrasound and particle manipulation applications using passive lenses. Nature Publishing Group UK 2019-12-27 /pmc/articles/PMC6934506/ /pubmed/31882678 http://dx.doi.org/10.1038/s41598-019-56369-z Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Jiménez-Gambín, Sergio
Jiménez, Noé
Benlloch, José M.
Camarena, Francisco
Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title_full Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title_fullStr Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title_full_unstemmed Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title_short Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
title_sort generating bessel beams with broad depth-of-field by using phase-only acoustic holograms
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934506/
https://www.ncbi.nlm.nih.gov/pubmed/31882678
http://dx.doi.org/10.1038/s41598-019-56369-z
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