Journal
OPTICS LETTERS
Volume 32, Issue 21, Pages 3134-3136Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.003134
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Calculations are presented for the generation of an isolated attosecond pulse in a multicycle two-color strong-field regime. We show that the recollision of the electron wave packet can be confined to half an optical cycle using pulses of up to 40 fs in duration. The scheme is proven to be efficient using two intense beams, one producing a strong field at omega and the other a strong field detuned from 2 omega. The slight detuning delta omega of the second harmonic is used to break the symmetry of the electric field over many optical cycles and provides a coherent control for the formation of an isolated attosecond pulse. (D 2007 Optical Society of America
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