Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field
Thomas PfeiferDepartment of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA. [email protected]L. GallmannUniversity of CaliforniaMark J. AbelUniversity of CaliforniaDaniel M. NeumarkUniversity of CaliforniaStephen R. LeoneUniversity of California
2006en
ABI
Annotatsiya
We present a method of producing single attosecond pulses by high-harmonic generation with multicycle driver laser pulses. This can be achieved by tailoring the driving pulse so that attosecond pulses are produced only every full cycle of the oscillating laser field rather than every half-cycle. It is shown by classical and quantum-mechanical model calculations that even a minor addition (1%) of phase-locked second-harmonic light to the 800 nm fundamental driver pulse for high-harmonic generation leads to a major (15%) difference in the maximum kinetic energies of the recombining electrons in adjacent half-cycles.
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