High-harmonic generation in solids

被引：1
|
作者：
Huttner, U. [1 ]
Hohenleutner, M. [2 ]
Langer, F. [2 ]
Schubert, O. [2 ]
Knorr, M. [2 ]
Huber, R. [2 ]
Koch, S. W. [1 ]
Kira, M. [1 ]
机构：
[1] Univ Marburg, Dept Phys, D-35032 Marburg, Germany
[2] Univ Regensburg, Dept Phys, D-93040 Regensburg, Germany
来源：
ULTRAFAST PHENOMENA AND NANOPHOTONICS XX | 2016年 / 9746卷
关键词：
High-harmonic generation; ultrafast processes; microscopic theory; nonperturbative excitations; THz-excitations;
D O I：
10.1117/12.2207870
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A microscopic theory is presented to describe high-harmonic generation in solids with the semiconductor-Bloch equations. The approach includes the relevant interband polarizations and intraband currents. The appearance of even harmonic orders is shown to require at least three electronic bands and a mutual interband coupling between them. In experimental and theoretical time-resolved studies, this also manifests as a unipolar emission signature of the high-harmonic radiation.
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页数：11
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