One of the commonly used approaches of solving electron transport problems in quantum
cascade lasers (QCL) is the Monte Carlo (MC) method, based on semiclassical description …

A common setback to electron transport models for quantum cascade laser active regions is
the inability to freely simulate widely varying designs. One solution to this problem is to use a …

We develop a time-dependent density-matrix model to study photon-assisted (PA) electron
transport in quantum cascade lasers. The Markovian equation of motion for the density …

The ability to grow heterostructures with high-quality interfaces brings great flexibility to the
design and development of modern electronic and optoelectronic devices. While nearly …

Quantum cascade lasers (QCLs) are high-power, coherent light sources emitting in the mid-
infrared and terahertz frequency ranges. In QCLs, multiple conduction subbands are formed …

The mid-infrared (mid-IR) part of the electromagnetic spectrum, with wavelengths in the 3–
20 µm range, is of great industrial, medical, and military importance. The atmospheric low …

Quantum cascade lasers (QCLs) are high-power coherent light sources in the midinfrared
and terahertz parts of the electromagnetic spectrum. They are systems in which the …

The continuous miniaturization of electronic devices has given rise to structures whose
dimensions do not exceed a few nanometers. At this size, electron transport can no longer …

The rapid advance in modern electronics and photonics is pushing device design to the
micro-and nano-scale, and the resulting high power density imposes immense challenges to …

With the advancement of nanofabrication techniques, the sizes of semiconductor electronic
and optoelectronic devices keep decreasing while the operating speeds keep increasing …