Amplification of femtosecond laser filaments in Ti:sapphire.
Femtosecond laser filamentation is studied in a broadband amplifying medium, sapphire doped with electronically excited Ti ions. Evidence for fluence amplification of self-guided pulses, increase of filamentation length, as well as a lowering of the input laser power necessary for filamentation is reported.
Philip
J
J
Laboratoire d'Optique Appliquée, CNRS UMR 7639, Ecole Nationale Supérieure des Techniques Avancées, Ecole Polytechnique, Palaiseau, France.
D'Amico
C
C
Chériaux
G
G
Couairon
A
A
Prade
B
B
Mysyrowicz
A
A