Steady-State Ab Initio Laser Theory for N-level Lasers

TL;DR

This paper extends Steady-State Ab Initio Laser Theory (SALT) to N-level lasers by mapping N-level rate equations to an effective two-level model, enabling efficient and accurate steady-state analysis.

Contribution

It introduces a method to apply SALT to N-level lasers through a novel mapping, simplifying steady-state calculations.

Findings

Excellent agreement with N-level time domain solutions

Efficient computation of multimode lasing properties

Validates the mapping approach for complex laser systems

Abstract

We show that Steady-state Ab initio Laser Theory (SALT) can be applied to find the stationary multimode lasing properties of an N-level laser. This is achieved by mapping the N-level rate equations to an effective two-level model of the type solved by the SALT algorithm. This mapping yields excellent agreement with more computationally demanding N-level time domain solutions for the steady state.