Silin Fu

Silin Fu
École Polytechnique · Laboratoire d'Optique Appliquée (LOA)

Master of Science
Ph.D student.

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6
Publications
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93
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Introduction
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Publications

Publications (6)
Article
We theoretically investigate the dynamic processes of solid harmonics generation using the one-dimensional time-dependent density functional theory and the three-band recollision model. Compared with gas harmonics, more quantum paths contribute to the generation of solid harmonics. Moreover, the number of quantum paths further increases as the lase...
Article
We investigate the gauge invariance of the semiconductor Bloch equations (SBEs) in solid high-order harmonic generation (HHG). It is found that the gauge dependence of the SBEs can be attributed to the absence of Berry connection terms in the SBEs in previous studies. When the Berry connection terms are considered, the gauge invariance of the SBEs...
Article
Full-text available
We theoretically investigate the carrier-envelope-phase (CEP) effect of laser pulses in the generation of solid high-order harmonics under nonadiabatic conditions using the time-dependent density functional theory. It is found that the CEP dependence of solid harmonics is still complex even if the Keldysh parameter γ remains unchanged. Further anal...
Article
We investigate the limitations of the single-electron time-dependent Schrödinger equation (TDSE) in the studies of solid high-order harmonic generation (HHG). Two main differences are found by comparing the harmonic spectra calculated by TDSE and semiconductor Bloch equations (SBEs) in the same conditions. One is that the spectrum obtained from SBE...
Article
Full-text available
We theoretically study the high-order harmonic generation of H2+ and its isotopes beyond the Born-Oppenheimer dynamics. It is surprising that the spectral redshift can still be observed in high harmonic spectra of H2+ driven by a sinusoidal laser pulse in which the trailing (leading) edge of the laser pulse is nonexistent. The results confirm that...
Article
We investigate the nonadiabatic spectral redshift of high-order harmonic of He driven by two time-delayed orthogonally polarized laser fields. It is found that the nonadiabatic spectral redshift can be observed by properly adjusting the time delay of the two laser fields when the controlling pulse is added in the raising part of the driving pulse i...

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