Contagious photons: Laser dynamics and the susceptible-infected-recovered model

被引：0

作者：

Kozyreff G. ^{[1
]}

Erneux T. ^{[1
]}

机构：

[1] Optique Nonlinéaire Théorique, Université Libre de Bruxelles (U.L.B.)

来源：

Physical Review E | 2023年 / 108卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.108.024218

中图分类号：

学科分类号：

摘要：

We explore a complete analogy between the classic susceptible-infected-recovered epidemiological model with natural birth and death rates, and class-B laser equations. As a result, recently derived asymptotic formulas in the former context can be used to describe the switch-on intensity pulse of a laser suddenly brought well above the lasing threshold, as in active Q-switching. Conversely, the well-studied laser relaxation oscillations find a companion behavior in epidemiology, emphasizing nontrivial timescales. Finally, we discuss the possible correspondence between multistrain outbreaks and multimode lasing. © 2023 American Physical Society.

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