高次谐波产生中晶体动量通道间的干涉效应

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2025-05-14 DOI:10.1016/j.cplett.2025.142133

Cai-Ping Zhang, Bao-Xia Liu, Yu-Zhi Chen, Si-Hui Wang, Xiang-Yang Miao

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引用次数: 0

摘要

通过求解基于多波段模型的时间相关Schrödinger方程，从理论上研究了双色激光场中周期势产生的高次谐波。结果表明，在相对相位相关的谐波谱上，明显地出现了拱形结构，并且证明了晶体动量通道之间的干涉对这种结构起着至关重要的作用。此外，通过引入静电场，进一步了解了电子在布里渊区的动态行为。

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Interference effect between crystal momentum channels in high-order harmonic generation

High-order harmonic generation from periodic potential in two-color laser field has been theoretically investigated by solving the time-dependent Schrödinger equation based on the multi-band model. The results show that arch-shaped structure prominently emerges on relative-phase-dependent harmonic spectra, and the interference between crystal momentum channels is proved to play a crucial role for the structure. Moreover, the dynamic behavior of electrons in Brillouin zone is further understood by introducing static electric field.

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.