Terahertz Radiation Source in Air Based on Bifilamentation of Femtosecond Laser Pulses

Abstract : A new terahertz (THz) source in air based on the bifilamentation of femtosecond laser pulses is reported. This THz radiation is 1 order of magnitude more intense than the transition-Cherenkov THz emission from femtosecond laser filaments reported recently and shows different angular and polarization properties. We attribute it to the emission from a bimodal transmission line created by two plasma filaments.
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Yi Liu, Aurélien Houard, Selcuk Akturk, André Mysyrowicz, Vladimir Tikhonchuk. Terahertz Radiation Source in Air Based on Bifilamentation of Femtosecond Laser Pulses. Physical Review Letters, American Physical Society, 2007, 99 (13), pp.135002. ⟨10.1103/PhysRevLett.99.135002⟩. ⟨hal-00455116⟩

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