We investigate the spectral and temporal structure of high harmonic emission from argon exposed to an infrared laser field and its second harmonic. For a wide range of generating conditions, trains of attosecond pulses with only one pulse per infrared cycle are generated. The synchronization necessary for producing such trains ensures that they have a stable pulse-to-pulse carrier envelope phase, unlike trains generated from one color fields, which have two pulses per cycle and a π phase shift between consecutive pulses. Our experiment extends the generation of phase stabilized few cycle pulses to the extreme ultraviolet regime. © 2006 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Mauritsson, J., Johnsson, P., Gustafsson, E., L'Huillier, A., Schafer, K., & Gaarde, M. (2006). Attosecond pulse trains generated using two color laser fields. Physical Review Letters, 97 (1) https://doi.org/10.1103/PhysRevLett.97.013001