Multiphoton excitation and high-harmonics generation in topological insulator
Mesoscale and Nanoscale Physics
2018-05-09 v1 Optics
Abstract
Multiphoton interaction of coherent electromagnetic radiation with 2D metallic carriers confined on the surface of the 3D topological insulator is considered. A microscopic theory describing the nonlinear interaction of a strong wave and metallic carriers with many-body Coulomb interaction is developed. The set of integrodifferential equations for the interband polarization and carrier occupation distribution is solved numerically. Multiphoton excitation of Fermi-Dirac sea of 2D massless carriers is considered for a THz pump wave. It is shown that in the moderately strong pump wave field along with multiphoton interband/intraband transitions the intense radiation of high harmonics takes place.
Keywords
Cite
@article{arxiv.1711.07840,
title = {Multiphoton excitation and high-harmonics generation in topological insulator},
author = {H. K. Avetissian and A. K. Avetissian and B. R. Avchyan and G. F. Mkrtchian},
journal= {arXiv preprint arXiv:1711.07840},
year = {2018}
}
Comments
13 pages, 7 figures