Above threshold ionization of Argon atoms by multicolor XUV radiation

R Della Picca, E Lindroth
2015 Journal of Physics, Conference Series  
We analyse theoretically the Argon photoelectron spectra produced by strong and extreme ultraviolet radiation of six colors: from the 11 th to the 16 th harmonics of ω0 (800nm). In particular we concentrate in the range of the spectra where absorption of two photons occurs. The combination of photons of different frequencies results in eleven peaks that are separated by ω0. We point out that their relative intensities are very sensitive to the laser pulse parameters and target description. We
more » ... t description. We also compare the theoretical description with experimental results finding good qualitative agreement.
doi:10.1088/1742-6596/583/1/012040 fatcat:6vyjloiunfd2rh7po6trenyiqa