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arXiv · 2312.16085

Application of the Green function formalism to the interplay between avalanche and multiphoton ionization induced by optical pulses

Alessandro Alberucci·Chandroth P. Jisha·Stefan Nolte
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Abstract

A fundamental brick of light-matter interaction at large optical intensities is the generation of a plasma. The optically-induced plasma in turn plays a fundamental role in determining the optical propagation. The plasma generation is a result of the interplay between multi-photon, tunnel and avalanche ionization. Here we use the basic rate equations to discuss an analytical model for the interaction between these physical effects. After defining a nonlinear impulse response for the system, we describe how the interplay depends on the features of the optical pulses. Our approach strongly simplifies the modelling of the propagation of ultrashort-pulses, paving the way to a much easier and faster interpretation of experimental observations, with potential impact on the broad fields of ultrafast light-matter interaction and laser micro-machining.

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Alessandro Alberucci, Chandroth P. Jisha, Stefan Nolte. 2023-12-26. Application of the Green function formalism to the interplay between avalanche and multiphoton ionization induced by optical pulses. https://doi.org/10.1103/physrevb.109.144302

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