Open AccessHigh-order harmonic analysis of anisotropic petahertz photocurrents in solids
Author(s) -
A. A. Lanin,
Evgeny A. Stepanov,
A. V. Mitrofanov,
D. A. SidorovBiryukov,
A. B. Fedotov,
A. M. Zheltikov
Publication year - 2019
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.44.001888
Subject(s) - optics , harmonic , nonlinear optics , high harmonic generation , physics , order (exchange) , anisotropy , harmonic analysis , materials science , laser , acoustics , mathematics , mathematical analysis , finance , economics
Polarization maps of high-order harmonics are shown to enable a full vectorial characterization of petahertz electron currents generated in a crystalline solid by an ultrashort laser driver. As a powerful resource of this methodology, analysis of energy-momentum dispersion landscapes, defined by the electron band structure, can help identify, as our analysis shows, special directions within the Brillouin zone that can provide a preferable basis for polarization-sensitive high-harmonic mapping of anisotropic petahertz photocurrents in solids.