Amplification of Femtosecond Laser Filaments in Ti:Sapphire

Josselin Philip (1) , Ciro d'Amico (1) , Gilles Cheriaux (1) , Arnaud Couairon (2) , Bernard Prade (1) , André Mysyrowicz (1)

1 LOA - Laboratoire d'optique appliquée
2 CPHT - Centre de Physique Théorique [Palaiseau]

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.

Keywords: filamentation; nonlinear optics

Domains: Optics [physics.optics]

Josselin Philip, Ciro d'Amico, Gilles Cheriaux, Arnaud Couairon, Bernard Prade, et al.. Amplification of Femtosecond Laser Filaments in Ti:Sapphire. Physical Review Letters, 2005, 95 (16), pp.163901. ⟨10.1103/PhysRevLett.95.163901⟩. ⟨hal-00463611⟩