Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses

Abstract Circularly polarized attosecond pulses are powerful tool to study chiral light-matter interaction via chiral electron dynamics. However, access to isolated circularly polarized attosecond pulses enabling straightforward interpretation of measurements, still remains a challenge. In this work...

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Autores principales:	Ulrich Bengs, Nickolai Zhavoronkov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9465802786d9405c95b20251a640aae3
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spelling	oai:doaj.org-article:9465802786d9405c95b20251a640aae32021-12-02T14:41:52ZElliptically polarized high-harmonic radiation for production of isolated attosecond pulses10.1038/s41598-021-88557-12045-2322https://doaj.org/article/9465802786d9405c95b20251a640aae32021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88557-1https://doaj.org/toc/2045-2322Abstract Circularly polarized attosecond pulses are powerful tool to study chiral light-matter interaction via chiral electron dynamics. However, access to isolated circularly polarized attosecond pulses enabling straightforward interpretation of measurements, still remains a challenge. In this work, we experimentally demonstrate the generation of highly elliptically polarized high-harmonics in a two-color, bi-circular, collinear laser field. The intensity and shape of the combined few-cycle driving radiation is optimized to produce a broadband continuum with enhanced spectral chirality in the range of 15-55 eV supporting the generation of isolated attosecond pulses with duration down to 150 as. We apply spectrally resolved polarimetry to determine the full Stokes vector of different spectral components of the continuum, yielding a homogenous helicity distribution with ellipticity in the range of 0.8-0.95 and a negligible unpolarized content.Ulrich BengsNickolai ZhavoronkovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ulrich Bengs Nickolai Zhavoronkov Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
description	Abstract Circularly polarized attosecond pulses are powerful tool to study chiral light-matter interaction via chiral electron dynamics. However, access to isolated circularly polarized attosecond pulses enabling straightforward interpretation of measurements, still remains a challenge. In this work, we experimentally demonstrate the generation of highly elliptically polarized high-harmonics in a two-color, bi-circular, collinear laser field. The intensity and shape of the combined few-cycle driving radiation is optimized to produce a broadband continuum with enhanced spectral chirality in the range of 15-55 eV supporting the generation of isolated attosecond pulses with duration down to 150 as. We apply spectrally resolved polarimetry to determine the full Stokes vector of different spectral components of the continuum, yielding a homogenous helicity distribution with ellipticity in the range of 0.8-0.95 and a negligible unpolarized content.
format	article
author	Ulrich Bengs Nickolai Zhavoronkov
author_facet	Ulrich Bengs Nickolai Zhavoronkov
author_sort	Ulrich Bengs
title	Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
title_short	Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
title_full	Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
title_fullStr	Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
title_full_unstemmed	Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
title_sort	elliptically polarized high-harmonic radiation for production of isolated attosecond pulses
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9465802786d9405c95b20251a640aae3
work_keys_str_mv	AT ulrichbengs ellipticallypolarizedhighharmonicradiationforproductionofisolatedattosecondpulses AT nickolaizhavoronkov ellipticallypolarizedhighharmonicradiationforproductionofisolatedattosecondpulses
_version_	1718389883821621248

Elliptically polarized high-harmonic radiation for production of isolated attosecond pulses

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