Electron bunch length measurements from laser-accelerated electrons using single-shot THz time-domain interferometry

Debus, A. and Bussman, M. and Schramm, Ulrich and Sauerbrey, R. and Murphy, C.D. and Major, Zs. and Hörlein, R. and Veisz, L. and Gallacher, Jordan Gerard and Jaroszynski, D.A. (2010) Electron bunch length measurements from laser-accelerated electrons using single-shot THz time-domain interferometry. Physical Review Letters, 104 (8). 084802. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.104.084802)

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Abstract

Laser-plasma wakefield-based electron accelerators are expected to deliver ultrashort electron bunches with unprecedented peak currents. However, their actual pulse duration has never been directly measured in a single-shot experiment. We present measurements of the ultrashort duration of such electron bunches by means of THz time-domain interferometry. With data obtained using a 0.5 J, 45 fs, 800 nm laser and a ZnTe-based electro-optical setup, we demonstrate the duration of laser-accelerated, quasimonoenergetic electron bunches [best fit of 32 fs (FWHM) with a 90% upper confidence level of 38 fs] to be shorter than the drive laser pulse, but similar to the plasma period.

  • Item type:Article
    ID code:26662
    Dates:
    Date
    Event
    26 February 2010
    Published
    Notes:Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user:Users 1261 not found.
    Date deposited:10 Aug 2010 14:34
    Last modified:18 Apr 2024 00:13
    URI:https://strathprints.strath.ac.uk/id/eprint/26662
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