Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires

We report on experimental results in a new regime of relativistic light-matter interaction employing midinfrared (3.9-μm wavelength) high-intensity femtosecond laser pulses. In the laser-generated plasma, electrons reach relativistic energies already for rather low intensities due to the fortunate λ...

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Autores principales:	Zhanna Samsonova, Sebastian Höfer, Vural Kaymak, Skirmantas Ališauskas, Valentina Shumakova, Audrius Pugžlys, Andrius Baltuška, Thomas Siefke, Stefanie Kroker, Alexander Pukhov, Olga Rosmej, Ingo Uschmann, Christian Spielmann, Daniil Kartashov
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2019
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/ed9d74eeb8624589b4c282c8c2f1513b
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spelling	oai:doaj.org-article:ed9d74eeb8624589b4c282c8c2f1513b2021-12-02T13:22:15ZRelativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires10.1103/PhysRevX.9.0210292160-3308https://doaj.org/article/ed9d74eeb8624589b4c282c8c2f1513b2019-05-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.9.021029http://doi.org/10.1103/PhysRevX.9.021029https://doaj.org/toc/2160-3308We report on experimental results in a new regime of relativistic light-matter interaction employing midinfrared (3.9-μm wavelength) high-intensity femtosecond laser pulses. In the laser-generated plasma, electrons reach relativistic energies already for rather low intensities due to the fortunate λ^{2} scaling of the kinetic energy with the laser wavelength. The lower intensity efficiently suppresses optical field ionization and creation of the preplasma at the rising edge of the laser pulse, enabling an enhanced efficient vacuum heating of the plasma. The lower critical plasma density for long-wavelength radiation can be surmounted by using nanowires instead of flat targets. Numerical simulations, which are in a good agreement with experimental results, suggest that ≈80% of the incident laser energy has been absorbed resulting in a long-living, keV-temperature, high-charge-state plasma with a density more than 3 orders of magnitude above the critical value. Our results pave the way to laser-driven experiments on laboratory astrophysics and nuclear physics at a high repetition rate.Zhanna SamsonovaSebastian HöferVural KaymakSkirmantas AlišauskasValentina ShumakovaAudrius PugžlysAndrius BaltuškaThomas SiefkeStefanie KrokerAlexander PukhovOlga RosmejIngo UschmannChristian SpielmannDaniil KartashovAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 9, Iss 2, p 021029 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Zhanna Samsonova Sebastian Höfer Vural Kaymak Skirmantas Ališauskas Valentina Shumakova Audrius Pugžlys Andrius Baltuška Thomas Siefke Stefanie Kroker Alexander Pukhov Olga Rosmej Ingo Uschmann Christian Spielmann Daniil Kartashov Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
description	We report on experimental results in a new regime of relativistic light-matter interaction employing midinfrared (3.9-μm wavelength) high-intensity femtosecond laser pulses. In the laser-generated plasma, electrons reach relativistic energies already for rather low intensities due to the fortunate λ^{2} scaling of the kinetic energy with the laser wavelength. The lower intensity efficiently suppresses optical field ionization and creation of the preplasma at the rising edge of the laser pulse, enabling an enhanced efficient vacuum heating of the plasma. The lower critical plasma density for long-wavelength radiation can be surmounted by using nanowires instead of flat targets. Numerical simulations, which are in a good agreement with experimental results, suggest that ≈80% of the incident laser energy has been absorbed resulting in a long-living, keV-temperature, high-charge-state plasma with a density more than 3 orders of magnitude above the critical value. Our results pave the way to laser-driven experiments on laboratory astrophysics and nuclear physics at a high repetition rate.
format	article
author	Zhanna Samsonova Sebastian Höfer Vural Kaymak Skirmantas Ališauskas Valentina Shumakova Audrius Pugžlys Andrius Baltuška Thomas Siefke Stefanie Kroker Alexander Pukhov Olga Rosmej Ingo Uschmann Christian Spielmann Daniil Kartashov
author_facet	Zhanna Samsonova Sebastian Höfer Vural Kaymak Skirmantas Ališauskas Valentina Shumakova Audrius Pugžlys Andrius Baltuška Thomas Siefke Stefanie Kroker Alexander Pukhov Olga Rosmej Ingo Uschmann Christian Spielmann Daniil Kartashov
author_sort	Zhanna Samsonova
title	Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
title_short	Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
title_full	Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
title_fullStr	Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
title_full_unstemmed	Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires
title_sort	relativistic interaction of long-wavelength ultrashort laser pulses with nanowires
publisher	American Physical Society
publishDate	2019
url	https://doaj.org/article/ed9d74eeb8624589b4c282c8c2f1513b
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Relativistic Interaction of Long-Wavelength Ultrashort Laser Pulses with Nanowires

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