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

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Abstract

The spectral distribution of the conical terahertz 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 terahertz emission is compared with that obtained in air via four wave mixing of femtosecond laser pulses at ω and 2ω in the presence of a plasma.

Original languageEnglish
Article number241105
JournalApplied Physics Letters
Volume91
Issue number24
DOIs
Publication statusPublished - 20 Dec 2007

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