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arXiv · 1808.02436

Full-wave analysis of reverse saturable absorption in time-domain

Shaimaa I. Azzam·Alexander V. Kildishev
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Abstract

An advanced full-wave time-domain numerical model for reverse saturable absorption (RSA) is presented and verified against established methods. Rate equations, describing atomic relaxations and excitation dynamics, are coupled to Maxwell equations by using a Lorentzian oscillator. These oscillator models the kinetics-dependent light-matter interaction in the form of averaged polarizations. The coupled equations are discretized in space and time using a finite-difference time-domain method which provides a versatile platform to design complex structures and integrate diverse material models. We believe that our models are crucial tools enabling for the realization and optimization of optical limiting and all-optical switching systems.

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Shaimaa I. Azzam, Alexander V. Kildishev. 2018-08-07. Full-wave analysis of reverse saturable absorption in time-domain. https://doi.org/10.1515/nanoph-2018-0139

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