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Toward compact and ultra-intense laser-based soft x-ray lasers

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    0501898 - FZÚ 2019 RIV GB eng J - Journal Article
    Sebban, S. - Depresseux, A. - Oliva, E. - Gautier, J. - Tissandier, F. - Nejdl, Jaroslav - Kozlová, Michaela - Maynard, G. - Goddet, J.P. - Tafzi, A. - Lifschitz, A. - Kim, H. T. - Jacquemot, S. - Rousseau, P. - Zeitoun, P. - Rousse, A.
    Toward compact and ultra-intense laser-based soft x-ray lasers.
    Plasma Physics and Controlled Fusion. Roč. 60, č. 1 (2018), s. 1-9, č. článku 014030. ISSN 0741-3335. E-ISSN 1361-6587
    R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT LQ1606
    Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
    Institutional support: RVO:68378271
    Keywords : XUV lasers * ultrafast laser * coherent radiation * optical field ionized plasmas
    OECD category: Optics (including laser optics and quantum optics)
    Impact factor: 2.799, year: 2018

    We report here recent work on an optical field ionized (OFI), high-order harmonic-seeded EUV laser. The amplifying medium is a plasma of nickel-like krypton obtained by OFI when focusing a 1 J, 30 fs, circularly-polarized, infrared pulse into a krypton-filled gas cell or krypton gas jet. The lasing transition is the 3d94d (J = 0) → 3d94p (J = 1) transition of Ni-like krypton ions at 32.8 nm and is pumped by collisions with hot electrons. The gain dynamics was probed by seeding the amplifier with a high-order harmonic pulse at different delays. The gain duration monotonically decreased from 7 ps to an unprecedented shortness of 450 fs full width at half-maximum as the amplification peak rose from 150 to 1200 with an increase of the plasma density from 3 × 1018 to 1.2 × 1020 cm−3. The integrated energy of the EUV laser pulse was also measured, and found to be around 2 μJ.
    Permanent Link: http://hdl.handle.net/11104/0293876

     
     
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