Contrast enhancement of ultra-intense laser pulses by relativistic plasma shutter

0551963 - FZÚ 2022 RIV US eng C - Conference Paper (international conference)
Nikl, Jan - Jirka, Martin - Matys, Martin - Kuchařík, M. - Klimo, Ondřej
Contrast enhancement of ultra-intense laser pulses by relativistic plasma shutter.
High Power Lasers and Applications. Bellingham: SPIE, 2021 - (Hein, J.; Butcher, T.; Bakule, P.; Haefner, C.; Korn, G.; Silva, L.), s. 1-6, č. článku 117770X. Proceedings of SPIE, 11777. ISBN 9781510643888.
[SPIE Optics + Optoelectronics. online (CZ), 19.04.2021-30.04.2021]
R&D Projects: GA MŠMT EF15_003/0000449
Grant - others:OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : pre-plasma * ultra-high intensity * plasma shutter * contrast enhancement * relativistic transparency
OECD category: Fluids and plasma physics (including surface physics)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11777/2589245/Contrast-enhancement-of-ultra-intense-laser-pulses-by-relativistic-plasma/10.1117/12.2589245.short?SSO=1&tab=ArticleLink

An increasing intensity of the laser systems becomes available for experiments in the fields of particle acceleration, radiation sources and many other applications. The higher intensity of the laser irradiation is inherently accompanied by the growth of the amplified spontaneous emission (ASE) pedestal and other parasitic effects. Considering the forthcoming generation of multi-PW laser systems, the nanosecond and picosecond pedestals significantly exceed the respective plasma formation thresholds and may have detrimental effects on the laser--target interaction. One of the promising methods to mitigate these effects is the relativistic plasma shutter, where an ultra-thin foil is placed in front of the target. The initial interaction with the shutter increases the temporal contrast, where the pre-plasma is opaque for the pedestal, but relativistically transparent for the main pulse.
Permanent Link: http://hdl.handle.net/11104/0327159