Generation of a strong attosecond pulse train with an orthogonally polarized two-color laser field

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We theoretically investigate the high-order harmonic generation from a neon atom irradiated by an intense two-color femtosecond laser pulse, in which the fundamental field and its second harmonic are linearly polarized and orthogonal to each other. In contrast to usual high-harmonic generation with linearly polarized fundamental field alone, a very strong and clean high-harmonic spectrum, consisting of both odd and even orders of harmonics, can be generated in the orthogonally polarized two-color laser field with proper selection of the relative phase between the fundamental and second-harmonic fields. In time domain, this results in a strong and regular attosecond pulse train. The origin of these behaviors is elucidated by analyzing semiclassical electron paths and by simulating high-harmonic generation quantum mechanically.
Publisher
AMER PHYSICAL SOC
Issue Date
2005-09
Language
English
Article Type
Article
Keywords

HIGH-HARMONIC GENERATION; IONIZATION

Citation

PHYSICAL REVIEW A, v.72, pp.345 - 360

ISSN
1050-2947
DOI
10.1103/PhysRevA.72.033817
URI
http://hdl.handle.net/10203/18293
Appears in Collection
PH-Journal Papers(저널논문)
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