Gouy phase shift for few-cycle laser pulses.
We measured for the first time the influence of the Gouy effect on focused few-cycle laser pulses. The carrier-envelope phase is shown to undergo a smooth variation over a few Rayleigh distances. This result is of critical importance for any application of ultrashort laser pulses, including high-harmonic and attosecond pulse generation, as well as phase-dependent effects.
Lindner
F
F
Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.
Paulus
G G
GG
Walther
H
H
Baltuska
A
A
Goulielmakis
E
E
Lezius
M
M
Krausz
F
F