Role of Van Hove singularities and effective mass anisotropy in polarization-resolved high harmonic spectroscopy of silicon

Abstract

High harmonic generation in solids has been intensively studied for compact extreme ultraviolet light sources and for understanding of the inner workings of solids. In this study, the authors conducted polarization-resolved nonlinear spectroscopy of silicon with numerical calculations and uncovered the significant influence of van Hove singularities on the processes of high harmonic generation.