Figure 7
Calculated photoelectron spectra of He for fundamental wavelength irradiance of 1013W/cm2, third-harmonic irradiance of 2 × 108 W/cm2, pulse duration of 33.2 fs, and relative phase ϕ between the fundamental and third harmonic of 0, π/2 or π rad. Photon energies: fundamental, 20.05 eV; third harmonic, 60.15 eV.
