Probing the effect of laser-carrier-envelop phase in frequency-comb high-order harmonic generation of He atoms.
POSTER
Abstract
We present an ab initio nonperturbative study of the role of carrier envelop phase (CEP) of the laser pulse trains in frequency-comb high-order harmonic generation (HHG). The frequency-comb HHG is obtained by solving three-dimensional time-dependent Schrödinger equation of the He atom driven by the intense laser pulse trains. We find that the structures of frequency-comb HHG in plateau regions are very sensitive to CEP of the laser pulse trains, while the dependence of the low-energy and near-cutoff harmonics on CEP is not observed. In addition, the dynamics of frequency-comb HHG at the plateau regions are clarified. Our results enable us to obtain a clear understanding of the role of CEP of the laser pulse trains in frequency-comb HHG and provide an insight into the field of ultrafast science and technology.
*This work was supported by the National Natural Science Foundation of China (No. 12074239). We also would like to acknowledge the partial support of Ministry of Science and Technology (MOST), Taiwan and National Taiwan University.
Presenters
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Chang-Tong Liang
- University of Shantou