Title :
Cerenkov THz emission from femtosecond filamentation in air
Author :
Houard, A. ; Amico, C.D. ; Franco, M. ; Prade, B. ; Mysyrowicz, A. ; Couairon, A. ; Tikhonchuk, V.
Author_Institution :
Laboratoire d¿Optique Appliquée, ENSTA, Ecole Polytechnique, CNRS UMR 7639, F-91761, Palaiseau, France
Abstract :
We measure a strong forward THz emission from femtosecond filaments in air and we attribute it to a Cerenkov emission from the ionization front moving at superluminal velocity.
Keywords :
Free electron lasers; Ionization; Optical propagation; Optical pulses; Plasma confinement; Plasma measurements; Polarization; Pulse measurements; Radiation detectors; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431619
