TY  - JOUR
AU  - Tancogne-Dejean, Nicolas
AU  - Muecke, Oliver
AU  - Kärtner, Franz X.
AU  - Rubio, Angel
TI  - Ellipticity dependence of high-harmonic generation in solids originating from coupled intraband and interband dynamics
JO  - Nature Communications
VL  - 8
IS  - 1
SN  - 2041-1723
CY  - London
PB  - Nature Publishing Group
M1  - PUBDB-2017-11098
SP  - 745
PY  - 2017
AB  - The strong ellipticity dependence of high-harmonic generation (HHG) in gases enables numerous experimental techniques that are nowadays routinely used, for instance, to create isolated attosecond pulses. Extending such techniques to solids requires a fundamental understanding of the microscopic mechanism of HHG. Here we use first-principles simulations within a time-dependent density-functional framework and show how intraband and interband mechanisms are strongly and differently affected by the ellipticity of the driving laser field. The complex interplay between intraband and interband effects can be used to tune and improve harmonic emission in solids. In particular, we show that the high-harmonic plateau can be extended by as much as 30
LB  - PUB:(DE-HGF)16
C6  - pmid:28963478
UR  - <Go to ISI:>//WOS:000412052400012
DO  - DOI:10.1038/s41467-017-00764-5
UR  - https://bib-pubdb1.desy.de/record/392831
ER  -