Calorimetric detection of the conical THz radiation from femtosecond laser filaments in air

Abstract : The spectral distribution of the conical terahertz (THz) emission from a femtosecond laser filament in air is measured with a bolometric detector and a set of filters, confirming that the main part of the emission lies between 0.5 and 3 THz. The efficiency of this THz emission is compared with that obtained in air via Four Waves Mixing of femtosecond laser pulses at ω and 2 ω in the presence of a plasma.
keyword : laser plasma terahertz
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Aurélien Houard, Yi Liu, André Mysyrowicz, Bernadette Leriche. Calorimetric detection of the conical THz radiation from femtosecond laser filaments in air. Applied Physics Letters, American Institute of Physics, 2007, 91, pp.241105. ⟨10.1063/1.2821371⟩. ⟨hal-00454579⟩

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