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Damage threshold of LiF crystal irradiated by femtosecond hard XFEL pulse sequence
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SYSNO ASEP 0573902 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Damage threshold of LiF crystal irradiated by femtosecond hard XFEL pulse sequence Author(s) Makarov, S. (RU)
Grigoryev, S. (RU)
Inogamov, N. (RU)
Vozda, Vojtěch (FZU-D) ORCID
Hájková, Věra (FZU-D) RID, ORCID
Burian, Tomáš (FZU-D) RID, ORCID
Chalupský, Jaromír (FZU-D) RID, ORCID
Juha, Libor (FZU-D) RID, ORCID, SAINumber of authors 28 Article number 26395 Source Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 31, č. 16 (2023)Number of pages 15 s. Language eng - English Country US - United States Keywords LiF crystal irradiation ; damage threshold ; femtosecond hard XFEL pulse sequence Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF18_053/0016627 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA20-08452S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001051220600004 EID SCOPUS 85168315730 DOI https://doi.org/10.1364/OE.486868 Annotation Here we demonstrate the results of investigating the damage threshold of a LiF crystal after irradiating it with a sequence of coherent femtosecond pulses using the European X-ray Free Electron Laser (EuXFEL). The laser fluxes on the crystal surface varied in the range ∼0.015–13 kJ/cm2 per pulse when irradiated with a sequence of 1-100 pulses (tpulse ∼20 fs, Eph = 9keV). Analysis of the surface of the irradiated crystal using different reading systems allowed the damage areas and the topology of the craters formed to be accurately determined. It was found that the ablation threshold decreases with increasing number of X-ray pulses, while the depth of the formed craters increases non-linearly and reaches several hundred nanometers. The obtained results have been compared with data already available in the literature for nano- and picosecond pulses from lasers in the soft X-ray/VUV and optical ranges. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0344294
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