Relativistic mid-wavelength infrared pulses generated in intense-laser mass-limited target interactions

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Qu, J. F. and Liu, P. and Liu, X. Y. and Gray, R. J. and McKenna, P. and Li, X. F. and Kawata, S. and Kong, Q. (2020) Relativistic mid-wavelength infrared pulses generated in intense-laser mass-limited target interactions. New Journal of Physics, 22 (9). 093007. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/abaab0)

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Abstract

Infrared spectroscopy, ultra-fast X-ray high harmonic generation, and time-resolved imaging of molecular structures benefit from the availability of intense mid-infrared wavelength pulses. Here we present a new approach to generating these, in which an intense short laser pulse is incident upon a near-critical density, spherical, mass-limited carbon target. After the laser pulse interaction, the carbon ions produced form a central force field. Plasma electrons accelerated by the laser return to the positively charged carbon target under the action of this field. The energy of these electrons is reduced and is lower than their energy in the laser field. These low-energy refluxing electrons start to oscillate with a rotating figure-of-eight motion around the positively charged carbon target and emit relativistically intense mid-infrared pulses with the wavelength in the range 1 to 4μm.

ORCID iDs

Qu, J. F., Liu, P., Liu, X. Y., Gray, R. J. ORCID logoORCID: https://orcid.org/0000-0003-0610-9595, McKenna, P. ORCID logoORCID: https://orcid.org/0000-0001-8061-7091, Li, X. F., Kawata, S. and Kong, Q.;
  • Item type:Article
    ID code:73112
    Dates:
    Date
    Event
    4 September 2020
    Published
    30 July 2020
    Published Online
    6 July 2020
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:08 Jul 2020 12:00
    Last modified:11 Nov 2024 12:45
    URI:https://strathprints.strath.ac.uk/id/eprint/73112
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