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  1. Article ; Online: Interaction of an intense few-cycle infrared laser pulse with an ultrathin transparent liquid sheet.

    Ferchaud, Clément / Jarosch, Sebastian / Avni, Timur / Alexander, Oliver / Barnard, Jonathan C T / Larsen, Esben W / Matthews, Mary R / Marangos, Jonathan P

    Optics express

    2022  Volume 30, Issue 19, Page(s) 34684–34692

    Abstract: We experimentally study the interaction between intense infrared few-cycle laser pulses and an ultrathin (∼2 µm) flat liquid sheet of isopropanol running in vacuum. We observe a rapid decline in transmission above a critical peak intensity of 50 TW/ ... ...

    Abstract We experimentally study the interaction between intense infrared few-cycle laser pulses and an ultrathin (∼2 µm) flat liquid sheet of isopropanol running in vacuum. We observe a rapid decline in transmission above a critical peak intensity of 50 TW/cm
    Language English
    Publishing date 2022-10-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.457470
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Attosecond soft X-ray high harmonic generation.

    Johnson, Allan S / Avni, Timur / Larsen, Esben W / Austin, Dane R / Marangos, Jon P

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

    2019  Volume 377, Issue 2145, Page(s) 20170468

    Abstract: High harmonic generation (HHG) of an intense laser pulse is a highly nonlinear optical phenomenon that provides the only proven source of tabletop attosecond pulses, and it is the key technology in attosecond science. Recent developments in high- ... ...

    Abstract High harmonic generation (HHG) of an intense laser pulse is a highly nonlinear optical phenomenon that provides the only proven source of tabletop attosecond pulses, and it is the key technology in attosecond science. Recent developments in high-intensity infrared lasers have extended HHG beyond its traditional domain of the XUV spectral range (10-150 eV) into the soft X-ray regime (150 eV to 3 keV), allowing the compactness, stability and sub-femtosecond duration of HHG to be combined with the atomic site specificity and electronic/structural sensitivity of X-ray spectroscopy. HHG in the soft X-ray spectral region has significant differences from HHG in the XUV, which necessitate new approaches to generating and characterizing attosecond pulses. Here, we examine the challenges and opportunities of soft X-ray HHG, and we use simulations to examine the optimal generating conditions for the development of high-flux, attosecond-duration pulses in the soft X-ray spectral range. This article is part of the theme issue 'Measurement of ultrafast electronic and structural dynamics with X-rays'.
    Language English
    Publishing date 2019-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 208381-4
    ISSN 1471-2962 ; 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    ISSN (online) 1471-2962
    ISSN 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    DOI 10.1098/rsta.2017.0468
    Database MEDical Literature Analysis and Retrieval System OnLINE

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