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arXiv · 2404.08742

Photoionization-induced reflection for benchmarking of the photoionization models in solid

Anton Husakou·Zukhriddin Ruziev·Kamoliddin Koraboev·Felipe Morales·Maria Richter·Kazuhiro Yabana
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Abstract

The choice of the most suitable analytic photoionization model in solids is a challenging task with no default solution. Here we show how the best formalism can be determined based on the waveform of the pulse reflected by a sample due to photoionized almost-free electrons in the conduction band. For a typical case of diamond, we compare three simple models and benchmark them against highly accurate first-principle TDDFT simulation, by analysing the fit between the reflected pulses in time and frequency domain. For the aims of this paper, we have developed a software package, called PIGLET, for the FDTD simulation of photoionization-governed propagation, which is now freely available for the scientific community. Furthermore, we show that due to interband contributions for very short sub-10-fs pulses a semi-classical description based on any analytical photoionization model fail to provide an adequate description.

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Anton Husakou, Zukhriddin Ruziev, Kamoliddin Koraboev, Felipe Morales, Maria Richter, Kazuhiro Yabana. 2024-04-12. Photoionization-induced reflection for benchmarking of the photoionization models in solid. https://arxiv.org/abs/2404.08742

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