The terahertz (THz) quantum cascade laser (QCL), first demonstrated in 2002, is among the
most promising radiation sources in the THz region owing to its high output power and broad …

Due to their intuitiveness, flexibility, and relative numerical efficiency, the macroscopic
Maxwell–Bloch (MB) equations are a widely used semiclassical and semi …

Abstract The Maxwell–Lindblad transmission line (MLT) equations are introduced as a
model for hybrid photonic and microwave‐electronic quantum devices. The hybrid concept …

n-type Ge/SiGe terahertz quantum cascade lasers are investigated using non-equilibrium
Green's functions calculations. We compare the temperature dependence of the terahertz …

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 …

We experimentally investigated the effect of oscillator strength (radiative transition
diagonality) on the performance of resonant phonon-based terahertz quantum cascade …

In this work we discuss terahertz quantum cascade laser designs that employ resonant
phonon mechanism to assist the lasing process. We investigate whether the higher energy …

We investigate electron transport in epitaxially grown nitride-based resonant tunneling
diodes (RTDs) and superlattice sequential tunneling devices. A density-matrix model is …

We derive a density matrix (DM) theory for quantum cascade lasers (QCLs) that describes
the influence of scattering on coherences through a generalized scattering superoperator …

Non-equilibrium Green's function (NEGF) formalism is used to optimize the gain region of a
quantum cascade laser (QCL) tailored to emit radiation at∼ 5 µm wavelength, originally …