Radiation from Tightly Focused Highly Intense Laser Pulse Interaction with Weakly Magnetized Plasma

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  • Parchamy Homaira
    Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University
  • Yugami Noboru
    Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University
  • Muraki Takuya
    Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University
  • Noda Hajime
    Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University
  • Nishida Yasushi
    Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University

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Abstract

From a tightly focused highly intense ultrashort laser pulse interaction with a weakly magnetized plasma, radiations in the microwave frequency range have been observed. To investigate the microwave radiation produced by the laser-plasma interaction, a mode-locked Ti:Sapphire laser beam with a wavelength of 800 nm, a pulse width of 100 fs [full width at half maximum (FWHM)], a maximum energy of 100 mJ per pulse, and a repetition rate of 10 Hz has been employed. Radiation emission characteristics could be explained by the electron motion along the applied magnetic field, where electrons are affected by the electric field created by an ion column. Calculated data of the electron motion are in good agreement with experimental data.

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