Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air
- Laboratoire d'Optique Appliquee, ENSTA, Ecole Polytechnique, CNRS UMR 7639, Palaiseau 91761 (France)
- Centre Lasers Intenses et Applications, Universite Bordeaux 1, CEA, CNRS UMR 5107, Talence 33405 (France)
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.
- OSTI ID:
- 21124051
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 5 Vol. 93; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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