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

Coupled carrier–phonon nonequilibrium dynamics in terahertz quantum cascade lasers: a Monte Carlo analysis

The operation of state-of-the-art optoelectronic quantum devices may be significantly affected by the presence of a nonequilibrium quasiparticle population to which the carrier subsystem is unavoidably coupled. This situation is particularly evident in new-generation semiconductor-heterostructure-based quantum emitters, operating both in the mid-infrared as well as in the terahertz (THz) region...

Two-well terahertz quantum cascade lasers with suppressed carrier leakage

Monte Carlo Simulation of Electron Transport in Quantum Cascade Lasers

We describe a numerical simulator for the electron transport in quantum cascade lasers (QCLs). A semi-classical transport model based on the Pauli master equation (PME) is used as it is considered a good trade-off between physical accuracy and computational efficiency [1]. The basis states for the PME are determined using a multi-band k·p Hamiltonian in order to account for the effects of band ...

Nanowire terahertz quantum cascade lasers

An Instability Study in Terahertz Quantum Cascade Lasers

Terahertz (1−10 THz, 30−300 μm) frequencies are among the least developed electromagnetic spectra even though they have wide ranging applications in spectroscopy, imaging, and remote sensing [1]. Since the report of quantum-cascade-lasers (QCLs) operating in the terahertz spectral region by Köhler et al. [2] there has been significant progress concerning the available frequencies, the temperatu...