Internet Archive Scholar

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

Xi Chu, Shih-I Chu
2001 Physical Review A. Atomic, Molecular, and Optical Physics  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (72.9 kB)
https://web.archive.org/web/20170814153136/https://kuscholarworks.ku.edu/bitstream/handle/1808/16001/ChuShih-I_7-13-2001.pdf?sequence=1

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL. The file type is application/pdf.

We present an ab initio three-dimensional quantum study of the coherent control of high-order harmonic generation ͑HHG͒ 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
more » ... hat "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.
doi:10.1103/physreva.64.021403 fatcat:ifctscyq5zadzeuz3n4ujl77e4
Citation

Xi Chu, Shih-I Chu. "Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission." Physical Review A. Atomic, Molecular, and Optical Physics 64.2 (2001)