SEMINAR    Monday April 16th, 2007 - h. 15:00 Aula Seminari (A - 34) André Mysyrowicz (Laboratoire d'Optique Appliqueé - Ecole Polytechnique)   Femtosecond filamentation   Abstract The process of filamentation of intense femtosecond laser pulses in transparent media will be discussed. Several applications will be described, including the formation of  highly conductive plasma channels and the generation of coherent THz emission.