Propagation time and nondipole contributions to intraband high-order harmonic generation

被引：7
作者：
Jensen, Simon Vendelbo Bylling [1 ]
Madsen, Lars Bojer [1 ]
机构：
[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark
来源：
PHYSICAL REVIEW A | 2022年 / 105卷 / 02期
关键词：
DYNAMICS; ELECTRONS;
D O I：
10.1103/PhysRevA.105.L021101
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Applying the semiclassical model, we identify two connected effects in intraband high-order harmonic generation (HHG): (1) propagation time from the point of emission at the source to the point of detection, and (2) beyond-electric-dipole corrections to the light-matter interaction. These effects inherit information regarding the dispersion and cause specific features in the spectra including even-ordered harmonics in systems with space and time-inversion symmetry. They can for certain experimental geometries be measured free of the dipole background.
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页数：7
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