Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor

Abstract In most applications of ultrashort pulse lasers, temporal compressors are used to achieve a desired pulse duration in a target or sample, and precise temporal characterization is important. The dispersion-scan (d-scan) pulse characterization technique usually involves using glass wedges to...

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Autores principales:	Benjamín Alonso, Íñigo J. Sola, Helder Crespo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/557025a3fc1146ee982da886ac763877
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spelling	oai:doaj.org-article:557025a3fc1146ee982da886ac7638772021-12-02T15:08:43ZSelf-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor10.1038/s41598-018-21701-62045-2322https://doaj.org/article/557025a3fc1146ee982da886ac7638772018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21701-6https://doaj.org/toc/2045-2322Abstract In most applications of ultrashort pulse lasers, temporal compressors are used to achieve a desired pulse duration in a target or sample, and precise temporal characterization is important. The dispersion-scan (d-scan) pulse characterization technique usually involves using glass wedges to impart variable, well-defined amounts of dispersion to the pulses, while measuring the spectrum of a nonlinear signal produced by those pulses. This works very well for broadband few-cycle pulses, but longer, narrower bandwidth pulses are much more difficult to measure this way. Here we demonstrate the concept of self-calibrating d-scan, which extends the applicability of the d-scan technique to pulses of arbitrary duration, enabling their complete measurement without prior knowledge of the introduced dispersion. In particular, we show that the pulse compressors already employed in chirped pulse amplification (CPA) systems can be used to simultaneously compress and measure the temporal profile of the output pulses on-target in a simple way, without the need of additional diagnostics or calibrations, while at the same time calibrating the often-unknown differential dispersion of the compressor itself. We demonstrate the technique through simulations and experiments under known conditions. Finally, we apply it to the measurement and compression of 27.5 fs pulses from a CPA laser.Benjamín AlonsoÍñigo J. SolaHelder CrespoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Benjamín Alonso Íñigo J. Sola Helder Crespo Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
description	Abstract In most applications of ultrashort pulse lasers, temporal compressors are used to achieve a desired pulse duration in a target or sample, and precise temporal characterization is important. The dispersion-scan (d-scan) pulse characterization technique usually involves using glass wedges to impart variable, well-defined amounts of dispersion to the pulses, while measuring the spectrum of a nonlinear signal produced by those pulses. This works very well for broadband few-cycle pulses, but longer, narrower bandwidth pulses are much more difficult to measure this way. Here we demonstrate the concept of self-calibrating d-scan, which extends the applicability of the d-scan technique to pulses of arbitrary duration, enabling their complete measurement without prior knowledge of the introduced dispersion. In particular, we show that the pulse compressors already employed in chirped pulse amplification (CPA) systems can be used to simultaneously compress and measure the temporal profile of the output pulses on-target in a simple way, without the need of additional diagnostics or calibrations, while at the same time calibrating the often-unknown differential dispersion of the compressor itself. We demonstrate the technique through simulations and experiments under known conditions. Finally, we apply it to the measurement and compression of 27.5 fs pulses from a CPA laser.
format	article
author	Benjamín Alonso Íñigo J. Sola Helder Crespo
author_facet	Benjamín Alonso Íñigo J. Sola Helder Crespo
author_sort	Benjamín Alonso
title	Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
title_short	Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
title_full	Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
title_fullStr	Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
title_full_unstemmed	Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
title_sort	self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/557025a3fc1146ee982da886ac763877
work_keys_str_mv	AT benjaminalonso selfcalibratingdscanmeasuringultrashortlaserpulsesontargetusinganarbitrarypulsecompressor AT inigojsola selfcalibratingdscanmeasuringultrashortlaserpulsesontargetusinganarbitrarypulsecompressor AT heldercrespo selfcalibratingdscanmeasuringultrashortlaserpulsesontargetusinganarbitrarypulsecompressor
_version_	1718387997876944896

Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor

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