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|a 10.1107/S160057752400626X
|2 doi
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|a pubmed24n1524.xml
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|a DE-627
|b ger
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|a eng
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|a Novinec, Luka
|e verfasserin
|4 aut
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|a New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick-Baez active optical system KAOS
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 05.09.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a open access.
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|a Advances in physics have been significantly driven by state-of-the-art technology, and in photonics and X-ray science this calls for the ability to manipulate the characteristics of optical beams. Orbital angular momentum (OAM) beams hold substantial promise in various domains such as ultra-high-capacity optical communication, rotating body detection, optical tweezers, laser processing, super-resolution imaging etc. Hence, the advancement of OAM beam-generation technology and the enhancement of its technical proficiency and characterization capabilities are of paramount importance. These endeavours will not only facilitate the use of OAM beams in the aforementioned sectors but also extend the scope of applications in diverse fields related to OAM beams. At the FERMI Free-Electron Laser (Trieste, Italy), OAM beams are generated either by tailoring the emission process on the undulator side or, in most cases, by coupling a spiral zone plate (SZP) in tandem with the refocusing Kirkpatrick-Baez active optic system (KAOS). To provide a robust and reproducible workflow to users, a Hartmann wavefront sensor (WFS) is used for both optics tuning and beam characterization. KAOS is capable of delivering both tightly focused and broad spots, with independent control over vertical and horizontal magnification. This study explores a novel non-conventional `near collimation' operational mode aimed at generating beams with OAM that employs the use of a lithographically manufactured SZP to achieve this goal. The article evaluates the mirror's performance through Hartmann wavefront sensing, offers a discussion of data analysis methodologies, and provides a quantitative analysis of these results with ptychographic reconstructions
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|a Journal Article
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|a orbital angular momentum of light
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|a ptychography
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|a tailored photonics beams
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|a wavefront sensing
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|a Pancaldi, Matteo
|e verfasserin
|4 aut
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|a Capotondi, Flavio
|e verfasserin
|4 aut
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|a De Ninno, Giovanni
|e verfasserin
|4 aut
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|a Guzzi, Francesco
|e verfasserin
|4 aut
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|a Kourousias, George
|e verfasserin
|4 aut
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|a Pedersoli, Emanuele
|e verfasserin
|4 aut
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|a Ressel, Barbara
|e verfasserin
|4 aut
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|a Rösner, Benedikt
|e verfasserin
|4 aut
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|a Simoncig, Alberto
|e verfasserin
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|a Zangrando, Marco
|e verfasserin
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|a Manfredda, Michele
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 31(2024), Pt 5 vom: 01. Sept., Seite 1058-1066
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
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|g volume:31
|g year:2024
|g number:Pt 5
|g day:01
|g month:09
|g pages:1058-1066
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|u http://dx.doi.org/10.1107/S160057752400626X
|3 Volltext
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