High-order harmonic generation from gapped graphene: Perturbative response and transition to nonperturbative regime

被引：50
|
作者：
Dimitrovski, Darko [1 ]
Madsen, Lars Bojer [2 ]
Pedersen, Thomas Garm [1 ]
机构：
[1] Aalborg Univ, Dept Phys & Nanotechnol, Skjernvej 4A, DK-9220 Aalborg, Denmark
[2] Aarhus Univ, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
来源：
PHYSICAL REVIEW B | 2017年 / 95卷 / 03期
关键词：
SEMICONDUCTORS; IONIZATION; FIELD;
D O I：
10.1103/PhysRevB.95.035405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We consider the interaction of gapped graphene in the two-band approximation using an explicit time-dependent approach. In addition to the full high-order harmonic generation (HHG) spectrum, we also obtain the perturbative harmonic response using the time-dependent method at photon energies covering all the significant features in the responses. The transition from the perturbative to the fully nonperturbative regime of HHG at these photon energies is studied in detail.
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页数：9
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