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arXiv · 2206.01042

Mechanisms of high harmonic generation in solids

A. Thorpe·N. Boroumand·A. M. Parks·E. Goulielmakis·T. Brabec
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Abstract

The long standing issue of separating resonant from non-resonant processes in extreme nonlinear optics is resolved. The theoretical formalism is applied to high harmonic generation (HHG) in solids and reveals a deeper view into the dominant laser and material dependent mechanisms. Mid-infrared driven HHG in semiconductors is dominated by the resonant interband current. As a result of the dynamic Stark shift, virtual processes gain in importance in near-infrared driven HHG in dielectrics. Finally, our analysis identifies limitations of microscopic one-electron-hole theories.

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A. Thorpe, N. Boroumand, A. M. Parks, E. Goulielmakis, T. Brabec. 2022-06-02. Mechanisms of high harmonic generation in solids. https://arxiv.org/abs/2206.01042

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