Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air

Yi Liu 1 Aurélien Houard 1 Bernard Prade 1 André Mysyrowicz 1 Abdourahmane Diaw 2 Vladimir Tikhonchuk 2
1 LOA - Laboratoire d'optique appliquée
2 CELIA - Centre d'Etudes Lasers Intenses et Applications
Abstract : The transition-Cherenkov terahertz radiation from a femtosecond laser filament in air is enhanced by three orders of magnitude in the presence of a longitudinal static electric field, while the radiation pattern and the polarization remain the same. An amplified longitudinal electron current inside the filament is responsible for this amplified terahertz emission.
Keywords : terahertz filament nonlinear optics
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Submitted on : Friday, March 5, 2010 - 7:11:10 PM
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Yi Liu, Aurélien Houard, Bernard Prade, André Mysyrowicz, Abdourahmane Diaw, et al.. Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air. Applied Physics Letters, American Institute of Physics, 2008, 93 (5), pp.051108. ⟨10.1063/1.2965612⟩. ⟨hal-00458429⟩

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