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

Source: [Full-wave analysis of reverse saturable absorption in time-domain](<https://www.sota2.com/research/paper/68fa38cc1e209131ce8bd527>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T23:08:49.560Z

Authors: Shaimaa I. Azzam, Alexander V. Kildishev

Published: 2018-08-07T15:59:31.000Z

## 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.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1808.02436>)

[PDF](<https://arxiv.org/pdf/1808.02436.pdf>)