High harmonic generation tomography of impurities in solids: conceptual analysis

TL;DR

This paper develops a three-step model for high harmonic generation in solid impurities, highlighting differences from gases and demonstrating the potential for impurity orbital tomography in condensed matter physics.

Contribution

It introduces a novel three-step model for HHG in solid impurities, emphasizing band structure effects and proposing a new method for orbital tomography.

Findings

HHG in impurities resembles that in gases but with band structure effects.

The model suggests feasibility of impurity orbital tomography.

Highlights new avenues for strong field physics in solids.

Abstract

A three step model for high harmonic generation from impurities in solids is developed. The process is found to be similar to high harmonic generation in atomic and molecular gases with the main difference coming from the non-parabolic nature of the bands. This opens a new avenue for strong field atomic and molecular physics in the condensed matter phase. As a first application, our conceptual study demonstrates the feasibility of tomographic measurement of impurity orbitals.