Monte Carlo study of carrier-light coupling in terahertz quantum cascade lasers

TL;DR

This paper introduces a Monte Carlo simulation method that self-consistently incorporates the optical cavity field to analyze lasing behavior in terahertz quantum cascade lasers, capturing gain saturation and mode competition effects.

Contribution

The paper presents a novel simulation approach that integrates optical cavity dynamics into carrier transport models for quantum cascade lasers.

Findings

Simulation results agree with experimental data

Effectively models gain saturation and mode competition

Provides insights into lasing operation in terahertz QCLs

Abstract

We present a method for self-consistently including the optical cavity field into Monte Carlo-based carrier transport simulations. This approach allows for an analysis of the actual lasing operation in quantum cascade lasers, considering effects such as gain saturation and longitudinal mode competition. Simulation results for a terahertz quantum cascade laser are found to be consistent with experiment.