Non-radially polarized THz pulse emitted from femtosecond laser filament in air
نویسندگان
چکیده
منابع مشابه
Non-radially polarized THz pulse emitted from femtosecond laser filament in air.
Femtosecond laser filament could produce THz wave in forward direction. In our experiment, THz pulse emitted from a femtosecond laser filament has been investigated. It was found that the polarization of the studied THz pulse mainly appears as elliptical. This observation supplements the previous conclusion obtained by C. D'Amico et al. that THz wave emitted by a filament is radially polarized....
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The transition-Cherenkov terahertz (THz) radiation from a femtosecond laser filament in air is enhanced by 3 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 THz emission. A plasma filament formed in air by...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2008
ISSN: 1094-4087
DOI: 10.1364/oe.16.015483