Spontaneous emergence of pulses with constant carrier-envelope phase in femtosecond filamentation.
We study the possibility to obtain high-intensity pulses that maintain a constant Carrier Envelope Phase (CEP) during propagation in dispersive media, i.e. pulses such that the carrier-wave offset with respect to the main intensity peak remains fixed. Our numerical experiments strongly suggest that pulse splitting and X-wave formation within femtosecond laser pulse filamentation leads to the formation of "constant-CEP" within well-defined regions inside the filament. We study the creation of "constant- CEP" pulses in both gasseous and condensed media showing that this is a generic feature of filaments.
Faccio
D
D
CNISM and Department of Physics and Mathematics, University of Insubria, Via Valleggio 11, IT-22100 Como, Italy. daniele.faccio@uninsubria.it
Lotti
A
A
Kolesik
M
M
Moloney
J V
JV
Tzortzakis
S
S
Couairon
A
A
Di Trapani
P
P
D003198:Computer Simulation; D017076:Computer-Aided Design; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation; D013685:Telecommunications