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Propagation time and nondipole contributions to intraband high-harmonic generation

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arxiv 2111.04995 v2 pith:ULY5TDHS submitted 2021-11-09 physics.atom-ph cond-mat.mes-hallphysics.optics

classification physics.atom-phcond-mat.mes-hallphysics.optics
keywords effectsgenerationhigh-harmonicintrabandpointpropagationtimeapplying
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Applying the semiclassical model, we identify two connected effects in intraband high-harmonic generation (HHG): (1) propagation time from the point of emission at the source to the point of detection, (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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