Factorization of high-harmonic generation yields in impurity-doped materials

We present a theoretical investigation of high-harmonic generation (HHG) from impurity-doped materials using the time-dependent Schrödinger equation (TDSE) approach. We demonstrate the factorization of HHG yields as a product of an electron wave packet and the recombination cross section, in analogy to HHG from atoms and molecules in the gas phase. Furthermore, we show that the quantitative rescattering model based on this factorization accurately reproduces the TDSE results. This opens up new possibilities to study impurities in materials using the available techniques from strong-field physics.

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