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国家自然科学基金(10974198)

作品数:3 被引量:0H指数:0
相关作者:张季李文亮姚洪斌更多>>
相关机构:新疆工程学院更多>>
发文基金:国家自然科学基金新疆维吾尔自治区高校科研计划更多>>
相关领域:理学电子电信更多>>

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Controls for the generation of high-order harmonics and attosecond pulses by an infrared laser field combined with a low-frequency pulse
2012年
We investigate high-order harmonic generations by controlling various quantum paths of harmonics in an infrared laser field which combines a low-frequency pulse. Both classical theory and the quantum wavelet transform method are used to understand the physics of harmonics. By adjusting the carrier envelope phase of the fundamental field, the intensities of harmonic spectra increase and the harmonics in the plateau become regular. Attosecond pulses each with a duration of 58 as are obtained directly by compressing the harmonics, and with phase compensation an isolated attosecond pulse less than 30 as can be generated.
贺海翔郭雅慧何国钟
三种不同表象下多组态含时Hartree Fock理论实现方案
2013年
多组态含时Hartree Fock理论方法作为一种研究强激光场中多电子原子分子体系动力学行为的一种有效手段,近几年来备受关注.本文介绍了该方法的发展历史,重点介绍了本研究组近几年来对该理论方法的发展,以及多组态含时Hartree Fock理论方法在原子基函数表象、格点表象、二次量子化表象不同的实现方案,并就典型体系做了大量详细的计算.同时也详细介绍了该方法在实际应用中存在的挑战,展望了多组态含时Hartree Fock理论方法的发展应用前景.
李文亮张季姚洪斌
关键词:强激光场电子相关
Method of accurately calculating mean field operator in multi-configuration time-dependent Hartree-Fock frame
2013年
The accurate theoretical expressions of the mean field operator associated with the multi-configuration time-dependent Hartree-Fock (MCTDHF) method are presented in this paper. By using a theoretical formula, derived without approxima- tion, we can study the multi-electron correlation dynamics accurately. Some illustrative calculations are carried out to check the accuracy of the expression of the mean field operator. The results of illustrative calculations indicate the reliability of the accurate expression of the mean field operator. This theoretical calculation method for the mean field operator may be of considerable help in future studies of the correlated dynamics of many-electron systems in strong laser fields.
李文亮张季姚洪斌
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