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Contrast enhancement of ultra-intense laser pulses by relativistic plasma shutter
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SYSNO ASEP 0544090 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Contrast enhancement of ultra-intense laser pulses by relativistic plasma shutter Author(s) Nikl, Jan (UFP-V) ORCID
Jirka, M. (CZ)
Matys, M. (CZ)
Kuchařík, M. (CZ)
Klimo, O. (CZ)Number of authors 5 Article number 117770X Source Title Proceedings of SPIE: The International Society for Optical Engineering, 11777. - Bellingham : International Society for Optics and Photonics, 2021 - ISSN 0277-786X - ISBN 9781510643888 Pages roč. 11777 (2021) Number of pages 6 s. Publication form Online - E Action High Power Lasers and Applications - SPIE Optics and Optoelectronics Digital Forum 2021 Event date 19.04.2021 - 23.04.2021 VEvent location online Country US - United States Event type WRD Language eng - English Country US - United States Keywords Contrast enhancement ; Plasma shutter ; Pre-plasma ; Relativistic transparency ; Ultra-high intensity Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Institutional support UFP-V - RVO:61389021 UT WOS 000697703200014 EID SCOPUS 85109213073 DOI 10.1117/12.2589245 Annotation 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. Moreover, the created pre-plasma exhibits a focussing effect, increasing the effective intensity of the main pulse. Two-dimensional hydrodynamic simulations of the pedestal are performed, followed by PIC simulations of the main pulse. The parameters of the shutter, like density and thickness, are varied to optimize performance of the configuration. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address 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
Number of the records: 1