Stray light characterization with ultrafast time-of-flight imaging

Abstract Understanding stray light (SL) is a crucial aspect in the development of high-end optical instruments, for instance space telescopes. As it drives image quality, SL must be controlled by design and characterized experimentally. However, conventional SL characterization methods are limited a...

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Autores principales:	L. Clermont, W. Uhring, M. Georges
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1ead6c1c715f4e6988d3378f3e29dd83
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id	oai:doaj.org-article:1ead6c1c715f4e6988d3378f3e29dd83
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spelling	oai:doaj.org-article:1ead6c1c715f4e6988d3378f3e29dd832021-12-02T17:15:28ZStray light characterization with ultrafast time-of-flight imaging10.1038/s41598-021-89324-y2045-2322https://doaj.org/article/1ead6c1c715f4e6988d3378f3e29dd832021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89324-yhttps://doaj.org/toc/2045-2322Abstract Understanding stray light (SL) is a crucial aspect in the development of high-end optical instruments, for instance space telescopes. As it drives image quality, SL must be controlled by design and characterized experimentally. However, conventional SL characterization methods are limited as they do not provide information on its origins. The problem is complex due to the diversity of light interaction processes with surfaces, creating various SL contributors. Therefore, when SL level is higher than expected, it can be difficult to determine how to improve the system. We demonstrate a new approach, ultrafast time-of-flight SL characterization, where a pulsed laser source and a streak camera are used to record individually SL contributors which travel with a specific optical path length. Furthermore, the optical path length offers a means of identification to determine its origin. We demonstrate this method in an imaging system, measuring and identifying individual ghosts and scattering components. We then show how it can be used to reverse-engineer the instrument SL origins.L. ClermontW. UhringM. GeorgesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q L. Clermont W. Uhring M. Georges Stray light characterization with ultrafast time-of-flight imaging
description	Abstract Understanding stray light (SL) is a crucial aspect in the development of high-end optical instruments, for instance space telescopes. As it drives image quality, SL must be controlled by design and characterized experimentally. However, conventional SL characterization methods are limited as they do not provide information on its origins. The problem is complex due to the diversity of light interaction processes with surfaces, creating various SL contributors. Therefore, when SL level is higher than expected, it can be difficult to determine how to improve the system. We demonstrate a new approach, ultrafast time-of-flight SL characterization, where a pulsed laser source and a streak camera are used to record individually SL contributors which travel with a specific optical path length. Furthermore, the optical path length offers a means of identification to determine its origin. We demonstrate this method in an imaging system, measuring and identifying individual ghosts and scattering components. We then show how it can be used to reverse-engineer the instrument SL origins.
format	article
author	L. Clermont W. Uhring M. Georges
author_facet	L. Clermont W. Uhring M. Georges
author_sort	L. Clermont
title	Stray light characterization with ultrafast time-of-flight imaging
title_short	Stray light characterization with ultrafast time-of-flight imaging
title_full	Stray light characterization with ultrafast time-of-flight imaging
title_fullStr	Stray light characterization with ultrafast time-of-flight imaging
title_full_unstemmed	Stray light characterization with ultrafast time-of-flight imaging
title_sort	stray light characterization with ultrafast time-of-flight imaging
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1ead6c1c715f4e6988d3378f3e29dd83
work_keys_str_mv	AT lclermont straylightcharacterizationwithultrafasttimeofflightimaging AT wuhring straylightcharacterizationwithultrafasttimeofflightimaging AT mgeorges straylightcharacterizationwithultrafasttimeofflightimaging
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Stray light characterization with ultrafast time-of-flight imaging

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