Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air
Yi Liu1**, Shaojie Liu1, Aurélien Houard2, André Mysyrowicz2, Vladimir T. Tikhonchuk3,4
1Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China 2Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, 91762 Palaiseau cedex, France 3Centre Lasers Intenses et Applications, University of Bordeaux-CNRS-CEA, 351 Cours de la Liberation, 33405 Talence cedex, France 4ELI-Beamlines, Institute of Physics, Czech Academy of Sciences, 25241 Dolní Břežany, Czech Republic
Abstract：The terahertz (THz) temporal waveform and spectrum from a longitudinal electrically biased femtosecond filament is studied experimentally. The initial direction of the electron motion inside the unbiased filament plasma is deduced from the transformation of the THz temporal waveform with applied fields of opposite polarities. Furthermore, a spectrum shift to lower frequency of the THz spectrum is observed in the presence of a biased field. It agrees well with theoretical predictions.
(Self-focussing, channeling, and filamentation in plasmas)
引用本文:
. [J]. 中国物理快报, 2020, 37(6): 65201-.
Yi Liu, Shaojie Liu, Aurélien Houard, André Mysyrowicz, Vladimir T. Tikhonchuk. Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air. Chin. Phys. Lett., 2020, 37(6): 65201-.
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2020, Vol. 37 
