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Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air

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.
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https://hal-ensta-paris.archives-ouvertes.fr//hal-02993245
Contributor : Aurélien Houard Connect in order to contact the contributor
Submitted on : Wednesday, December 16, 2020 - 3:31:27 PM
Last modification on : Wednesday, May 11, 2022 - 3:22:05 PM
Long-term archiving on: : Wednesday, March 17, 2021 - 6:02:04 PM

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Yi Liu, Shaojie Liu, Aurélien Houard, André Mysyrowicz, Vladimir Tikhonchuk. Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air. Chinese Physics Letters, IOP Publishing, 2020, 37, ⟨10.1088/0256-307x/37/6/065201⟩. ⟨hal-02993245⟩

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