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Large area ion beam sputtered dielectric ultrafast mirrors for petawatt laser beamlines

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    0557025 - FZÚ 2023 RIV US eng J - Journal Article
    Willemsen, T. - Chaulagain, Uddhab P. - Havlíčková, Irena - Borneis, Stefan - Ebert, W. - Ehlers, H. - Gauch, M. - Groß, T. - Kramer, Daniel - Laštovička, Tomáš - Nejdl, Jaroslav - Rus, Bedřich - Schrader, K. - Tolenis, Tomas - Vaněk, František - Velpula, Praveen K. - Weber, Stefan A.
    Large area ion beam sputtered dielectric ultrafast mirrors for petawatt laser beamlines.
    Optics Express. Roč. 30, č. 4 (2022), s. 6129-6141. ISSN 1094-4087
    R&D Projects: GA MŠk EF16_019/0000789; GA MŠk EF15_003/0000449
    EU Projects: European Commission(XE) 871161 - IMPULSE
    Grant - others: OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789; OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
    Institutional support: RVO:68378271
    Keywords : ultrafast mirrors * coating * ion sputtering * lasers
    OECD category: Fluids and plasma physics (including surface physics)
    Impact factor: 3.833, year: 2021
    Method of publishing: Open access

    The latest advances in petawatt laser technology within the ELI Beamlines project have stimulated the development of large surface area dielectrically coated mirrors meeting all demanding requirements for guiding the compressed 30 J, 25 fs HAPLS laser beam at 10 Hz repetition rate and a center wavelength of 810 nm entirely in vacuum. We describe the production and evaluation of Ta2O5/HfO2/SiO2 ion beam sputtered coated (440 × 290 × 75) mm3 beam transport mirrors. No crazing was observed after thirty vacuum-air cycles. A laser induced damage threshold of 0.76 J/cm2 (fluence on mirror surface) was achieved and maintained at high shot rates
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Number of the records: 1