Open AccessHigh-order harmonic generation of hydrogen molecule irradiated by ultra-strong femto-second laser pulse——a simulation via TDDFT
Author(s) -
Bing-Lin Gu,
Lei Cui,
Xianghua Zeng,
Feng-Shou Zhang
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.2972
Subject(s) - time dependent density functional theory , high harmonic generation , laser , materials science , ultrashort pulse , femto , pulse (music) , molecule , hydrogen , atomic physics , optics , physics , quantum mechanics , detector
The high order harmonic generation (HHG) of hydrogen molecule irradiated by ultra-strong femto-second laser pulse is simulated by the TTDFT method with the classical and quantum combination technique. The results indicate that the HHG spectra of H2 have a “decrease-plateau-cutoff” structure. A kind of “odd allowed, even forbidden” selective phenomenon of the order number of HHG is observed. Change in polarization direction of laser beam may change the cut-off order and spectrum intensity of HHG simultaneously.