Terahertz quantum cascade lasers (QCLs) emit radiation due to intersubband optical
transitions in semiconductor superlattices that could be engineered by design. Among a …

Quantum cascade lasers are compact devices based on mature compound semiconductors
such as GaAs that take advantage of highly developed optoelectronic fabrication techniques …

Even though already in the seventies, right after the invention of the quantum cascade laser
(QCL) concept, it was argued that this device could be operated in the THz (far-infrared) …

Ring resonators are an interesting alternative cavity solution to the commonly used ridge-
type waveguide for terahertz (THz) quantum cascade lasers. They either support a standing …

Terahertz (THz) quantum cascade lasers (QCLs) are semiconductor-based electrically
pumped laser sources that are based on electron transitions between the subbands in the …

We increased the active region/waveguide thickness of terahertz quantum cascade lasers
with semi-insulating surface plasmon waveguides by stacking two symmetric active regions …

The technological solutions and optical configurations employed to tune the emission
frequency of quantum cascade lasers (QCLs) operating in the Terahertz range are reviewed …

A terahertz (THz) quantum cascade laser (QCL) is an electrically pumped semiconductor
laser based on the inter‐subband electron transitions in a multiple‐quantum‐well …

Quantum cascade lasers (QCLs) are a prominent semiconductor laser source operating in
the mid-infrared and terahertz regimes. As is typical with semiconductor lasers, QCLs …

We present a surface emitting distributed feedback terahertz laser resonator based on a
dual-slit configuration. With the spacing of the slits as a parameter, the surface losses of the …