Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser

Abstract The advent of x-ray free electron lasers has extended the unique capabilities of resonant x-ray spectroscopy techniques to ultrafast time scales. Here, we report on a novel experimental method that allows retrieving with a single x-ray pulse the time evolution of an ultrafast process, not o...

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Autores principales:	Michele Buzzi, Mikako Makita, Ludovic Howald, Armin Kleibert, Boris Vodungbo, Pablo Maldonado, Jörg Raabe, Nicolas Jaouen, Harald Redlin, Kai Tiedtke, Peter M. Oppeneer, Christian David, Frithjof Nolting, Jan Lüning
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/808baa3f823841bd96697911e838a496
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spelling	oai:doaj.org-article:808baa3f823841bd96697911e838a4962021-12-02T11:53:09ZSingle-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser10.1038/s41598-017-07069-z2045-2322https://doaj.org/article/808baa3f823841bd96697911e838a4962017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07069-zhttps://doaj.org/toc/2045-2322Abstract The advent of x-ray free electron lasers has extended the unique capabilities of resonant x-ray spectroscopy techniques to ultrafast time scales. Here, we report on a novel experimental method that allows retrieving with a single x-ray pulse the time evolution of an ultrafast process, not only at a few discrete time delays, but continuously over an extended time window. We used a single x-ray pulse to resolve the laser-induced ultrafast demagnetisation dynamics in a thin cobalt film over a time window of about 1.6 ps with an excellent signal to noise ratio. From one representative single shot measurement we extract a spin relaxation time of (130 ± 30) fs with an average value, based on 193 single shot events of (113 ± 20) fs. These results are limited by the achieved experimental time resolution of 120 fs, and both values are in excellent agreement with previous results and theoretical modelling. More generally, this new experimental approach to ultrafast x-ray spectroscopy paves the way to the study of non-repetitive processes that cannot be investigated using traditional repetitive pump-probe schemes.Michele BuzziMikako MakitaLudovic HowaldArmin KleibertBoris VodungboPablo MaldonadoJörg RaabeNicolas JaouenHarald RedlinKai TiedtkePeter M. OppeneerChristian DavidFrithjof NoltingJan LüningNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michele Buzzi Mikako Makita Ludovic Howald Armin Kleibert Boris Vodungbo Pablo Maldonado Jörg Raabe Nicolas Jaouen Harald Redlin Kai Tiedtke Peter M. Oppeneer Christian David Frithjof Nolting Jan Lüning Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
description	Abstract The advent of x-ray free electron lasers has extended the unique capabilities of resonant x-ray spectroscopy techniques to ultrafast time scales. Here, we report on a novel experimental method that allows retrieving with a single x-ray pulse the time evolution of an ultrafast process, not only at a few discrete time delays, but continuously over an extended time window. We used a single x-ray pulse to resolve the laser-induced ultrafast demagnetisation dynamics in a thin cobalt film over a time window of about 1.6 ps with an excellent signal to noise ratio. From one representative single shot measurement we extract a spin relaxation time of (130 ± 30) fs with an average value, based on 193 single shot events of (113 ± 20) fs. These results are limited by the achieved experimental time resolution of 120 fs, and both values are in excellent agreement with previous results and theoretical modelling. More generally, this new experimental approach to ultrafast x-ray spectroscopy paves the way to the study of non-repetitive processes that cannot be investigated using traditional repetitive pump-probe schemes.
format	article
author	Michele Buzzi Mikako Makita Ludovic Howald Armin Kleibert Boris Vodungbo Pablo Maldonado Jörg Raabe Nicolas Jaouen Harald Redlin Kai Tiedtke Peter M. Oppeneer Christian David Frithjof Nolting Jan Lüning
author_facet	Michele Buzzi Mikako Makita Ludovic Howald Armin Kleibert Boris Vodungbo Pablo Maldonado Jörg Raabe Nicolas Jaouen Harald Redlin Kai Tiedtke Peter M. Oppeneer Christian David Frithjof Nolting Jan Lüning
author_sort	Michele Buzzi
title	Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
title_short	Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
title_full	Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
title_fullStr	Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
title_full_unstemmed	Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
title_sort	single-shot monitoring of ultrafast processes via x-ray streaking at a free electron laser
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/808baa3f823841bd96697911e838a496
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Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser

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