The external performance of quantum optoelectronic devices is governed by the three-
dimensional profiles of electric potentials determined by the distribution of charge carriers …

Dynamic charge carriers play a vital role in active photonic quantum/nanodevices, such as
electrically pumped semiconductor lasers. Here we present a systematic experimental study …

The external performance of quantum optoelectronic devices is governed by the spatial
profiles of electrons and potentials within the active regions of these devices. For example …

Recently, the operating frequency range of quantum-cascade lasers (QCLs) has been
extended from the mid-infrared to the far-infrared beow the Reststrahlen band (THz …

Since their invention in the middle of the 1990s, quantum cascade lasers (QCLs) attract
increasing theoretical interest stimulated by their widening applications. One of the key …

Quantum cascade lasers (QCLs) have emerged as an important coherent light source in the
mid-wave infrared (MWIR) and long-wave infrared (LWIR) region of the electromagnetic …

Quantum cascade lasers (QCLs) are periodic semiconductor heterostructures, capable of
producing laser gain. They have become an important source of coherent radiation in the …

Quantum optoelectronic devices based on nanostructured semiconductor materials offer
unique control over the device properties by wavefunction engineering. Among other things …

In addition to the phase uctuation induced by spontaneous emission, instantaneous carrier
variations in semiconductor lasers generate coupling between optical gain and refractive …

In this study, the nature of electronic transport in quantum cascade lasers (QCLs) has been
extensively investigated using an ultrafast time-resolved, degenerate, pump-probe optical …