Quantum path selection in high-harmonic generation by a phase-locked two-color field.
We report the results of our studies on the selection of the quantum path in high-harmonic generation (HHG) with a relative-phase-locked two-color laser field. It is shown that by tuning the relative phase between fundamental and second-harmonic fields, The timing of tunnel ionization and subsequent electron trajectories on the sub-cycle time scale can be controlled. We have clearly observed a phase-dependent two-step feature in the harmonic spectra that can be attributed to the selection of two major trajectories in the two-color field HHG.
Ishii
N
N
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba. 277-8581, Japan. ishii@issp.u-tokyo.ac.jp
Kosuge
A
A
Hayashi
T
T
Kanai
T
T
Itatani
J
J
Adachi
S
S
Watanabe
S
S
D003116:Color; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D011789:Quantum Theory; D012542:Scattering, Radiation