Abstract
A new terahertz (THz) source in air based on the bifilamentation of femtosecond laser pulses is reported. This THz radiation is 1 order of magnitude more intense than the transition-Cherenkov THz emission from femtosecond laser filaments reported recently and shows different angular and polarization properties. We attribute it to the emission from a bimodal transmission line created by two plasma filaments.
- Received 11 June 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.135002
©2007 American Physical Society