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    Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission

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    ChuShih-I_7-13-2001.pdf (71.19Kb)
    Issue Date
    2001-07-13
    Author
    Chu, Xi
    Chu, Shih-I
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We present an ab initio three-dimensional quantum study of the coherent control of high-order harmonic generation (HHG) processes in intense pulsed laser fields by means of the genetic algorithm optimization of the laser-pulse amplitude and phase. Accurate time-dependent wavefunction and HHG power spectrum are obtained by the time-dependent generalized pseudospectral method and wavelet transform is used to obtain the dynamical phase associated with the dipole-emission time profile. It is shown that “intra-atomic” dynamical phase matching on the sub-optical cycle, attosecond, time scale can be achieved, leading to nearly perfect constructive interference between different returning electronic wave packets and marked improvement in both emission intensity and purity of a given harmonic order.
    Description
    This is the published version, also available here: http://dx.doi.org/10.1103/PhysRevA.64.021403.
    URI
    http://hdl.handle.net/1808/16001
    DOI
    https://doi.org/10.1103/PhysRevA.64.021403
    Collections
    • Chemistry Scholarly Works [610]
    • Distinguished Professors Scholarly Works [918]
    Citation
    Chu, Shih-I. & Xi, Chu. "Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission." Phys. Rev. A 64, 021403(R) – Published 13 July 2001. http://dx.doi.org/10.1103/PhysRevA.64.021403.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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