Sequential resonant tunneling in quantum cascade lasers

TL;DR

This paper presents a model for sequential resonant tunneling in quantum cascade lasers that explicitly includes elastic scattering, showing excellent agreement with experimental measurements across various conditions.

Contribution

The study introduces a detailed tunneling transport model that accurately predicts quantum cascade laser behavior, improving understanding of resonant tunneling processes.

Findings

Model matches experimental data over wide current and temperature ranges

Explicit elastic scattering inclusion enhances transport prediction accuracy

Resonant tunneling dominates transport in studied devices

Abstract

A model of sequential resonant tunneling transport between two-dimensional subbands that takes into account explicitly elastic scattering is investigated. It is compared to transport measurements performed on quantum cascade lasers where resonant tunneling processes are known to be dominating. Excellent agreement is found between experiment and theory over a large range of current, temperature and device structures.