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Generation and characterization of focused helical x-ray beams
The phenomenon of orbital angular momentum (OAM) affects a variety of important applications in visible optics, including optical tweezers, free-space communication, and 3D localization for fluorescence imaging. The lack of suitable wavefront shaping optics such as spatial light modulators has inhib...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7021491/ https://www.ncbi.nlm.nih.gov/pubmed/32110725 http://dx.doi.org/10.1126/sciadv.aax8836 |
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author | Loetgering, Lars Baluktsian, Margarita Keskinbora, Kahraman Horstmeyer, Roarke Wilhein, Thomas Schütz, Gisela Eikema, Kjeld S. E. Witte, Stefan |
author_facet | Loetgering, Lars Baluktsian, Margarita Keskinbora, Kahraman Horstmeyer, Roarke Wilhein, Thomas Schütz, Gisela Eikema, Kjeld S. E. Witte, Stefan |
author_sort | Loetgering, Lars |
collection | PubMed |
description | The phenomenon of orbital angular momentum (OAM) affects a variety of important applications in visible optics, including optical tweezers, free-space communication, and 3D localization for fluorescence imaging. The lack of suitable wavefront shaping optics such as spatial light modulators has inhibited the ability to impart OAM on x-ray and electron radiation in a controlled way. Here, we report the experimental observation of helical soft x-ray beams generated by holographically designed diffractive optical elements. We demonstrate that these beams rotate as a function of propagation distance and measure their vorticity and coherent mode structure using ptychography. Our results establish an approach for controlling and shaping of complex focused beams for short wavelength scanning microscopy and OAM-driven applications. |
format | Online Article Text |
id | pubmed-7021491 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-70214912020-02-27 Generation and characterization of focused helical x-ray beams Loetgering, Lars Baluktsian, Margarita Keskinbora, Kahraman Horstmeyer, Roarke Wilhein, Thomas Schütz, Gisela Eikema, Kjeld S. E. Witte, Stefan Sci Adv Research Articles The phenomenon of orbital angular momentum (OAM) affects a variety of important applications in visible optics, including optical tweezers, free-space communication, and 3D localization for fluorescence imaging. The lack of suitable wavefront shaping optics such as spatial light modulators has inhibited the ability to impart OAM on x-ray and electron radiation in a controlled way. Here, we report the experimental observation of helical soft x-ray beams generated by holographically designed diffractive optical elements. We demonstrate that these beams rotate as a function of propagation distance and measure their vorticity and coherent mode structure using ptychography. Our results establish an approach for controlling and shaping of complex focused beams for short wavelength scanning microscopy and OAM-driven applications. American Association for the Advancement of Science 2020-02-14 /pmc/articles/PMC7021491/ /pubmed/32110725 http://dx.doi.org/10.1126/sciadv.aax8836 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Loetgering, Lars Baluktsian, Margarita Keskinbora, Kahraman Horstmeyer, Roarke Wilhein, Thomas Schütz, Gisela Eikema, Kjeld S. E. Witte, Stefan Generation and characterization of focused helical x-ray beams |
title | Generation and characterization of focused helical x-ray beams |
title_full | Generation and characterization of focused helical x-ray beams |
title_fullStr | Generation and characterization of focused helical x-ray beams |
title_full_unstemmed | Generation and characterization of focused helical x-ray beams |
title_short | Generation and characterization of focused helical x-ray beams |
title_sort | generation and characterization of focused helical x-ray beams |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7021491/ https://www.ncbi.nlm.nih.gov/pubmed/32110725 http://dx.doi.org/10.1126/sciadv.aax8836 |
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