Spatio-temporal couplings for controlling group velocity in longitudinally pumped seeded soft X-ray lasers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00583131" target="_blank" >RIV/61389021:_____/23:00583131 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41566-023-01165-5#data-availability" target="_blank" >https://www.nature.com/articles/s41566-023-01165-5#data-availability</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41566-023-01165-5" target="_blank" >10.1038/s41566-023-01165-5</a>
Alternative languages
Result language
angličtina
Original language name
Spatio-temporal couplings for controlling group velocity in longitudinally pumped seeded soft X-ray lasers
Original language description
Controlling the group velocity of an ultrashort laser pulse by means of spatio-temporal couplings has been proposed to overcome the inherent limitations in laser–plasma interactions. Here we report how this method improves the performance of a seeded soft X-ray laser (SXRL), which intrinsically suffers from group velocity mismatch between the infrared pump beam, used to generate the plasma amplifier, and the soft X-ray seed beam. The energy extraction was measured to be three times higher when the pump group velocity varied from 0.55c to 1.05c. We also demonstrate that the SXRL pulse duration is governed by the pump beam velocity. By compensating the natural group velocity mismatch, the SXRL pulse duration can be kept constant along its propagation, resulting in energetic pulses (up to 2 μJ) as short as 350 fs. Such achievements constitute an experimental demonstration of the so-called ‘flying focus effect’ in an application by controlling the group velocity of a high-intensity laser pulse propagating in a plasma.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Photonics
ISSN
1749-4885
e-ISSN
1749-4893
Volume of the periodical
17
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
354-359
UT code for WoS article
000942696700001
EID of the result in the Scopus database
2-s2.0-85149120398