Speaker
Luc Bergé
(CEA, DAM, DIF, Arpajon, France)
Description
This talk will review different physical mechanisms involved in the emission of secondary radiations, with emphasis on terahertz waves, by laser-gas interactions. At moderate laser intensity, photocurrents can be exploited to perform a coherent terahertz spectroscopy of various crystals from air plasmas or to image tunneling electron wave packets from probing the polarization state of secondary Brunel radiations. With ultra-intense lasers, the possibility of generating high-field (close to 0.5 TV/m) THz pulses from relativistic gas plasmas embedded in strong (> 100 T) magnetic fields will be demonstrated.
Primary author
Luc Bergé
(CEA, DAM, DIF, Arpajon, France)
