Density matrix Monte Carlo modeling of quantum cascade lasers

Abstract

By including elements of the density matrix formalism, the semiclassical ensemble Monte Carlo method for carrier transport is extended to incorporate incoherent tunneling, known to play an important role in quantum cascade lasers (QCLs). In particular, this effect dominates electron transport across thick injection barriers, which are frequently used in terahertz QCL designs. A self-consistent model for quantum mechanical dephasing is implemented, eliminating the need for empirical simulation parameters. Our modeling approach is validated against available experimental data for different types of terahertz QCL designs.

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• Backscattering-Induced Dissipative Solitons in Ring Quantum Cascade Lasers
• Quantum simulating the electron transport in quantum cascade laser structures
• Monte Carlo Modeling of Terahertz Quantum Cascade Detectors
• Frequency comb generation by Bloch gain induced giant Kerr nonlinearity
• Orthonormal and periodic levels for Quantum Cascade Laser simulation
• Numerically efficient density-matrix technique for modeling electronic transport in midinfrared quantum cascade lasers