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 …

Terahertz (THz) radiation encompasses a wide spectral range within the electromagnetic
spectrum that extends from microwaves to the far infrared (100 GHz–∼ 30 THz). Within its …

In highly doped semiconductor quantum wells (QWs), electrons populate various energy
states from different subbands and, therefore, several optical intersubband transitions …

The electric polarization of (Zn, Mg) O alloys, known as stable wide-bandgap
semiconductors, is an intrinsic property that has a significant impact on the properties and …

We investigated the effect of Mg doping on the electron affinity of ZnO thin films. Mg x Zn 1− x
O (x= 0–0.29) composition-gradient films were deposited on an α-Al 2 O 3 (001) substrate …

Due to their high optical phonon energies GaInP/AlGaInP heterostructures are a promising
active medium to solve the problem of creating compact semiconductor sources with an …

Ferroelectric memristors have attracted much attention as a type of nonvolatile resistance
switching memories in neuromorphic computing, image recognition, and information …

A band design of a quantum cascade laser with a generation frequency higher than 6 THz
and an active region based on four GaAs/Al 0.14 Ga 0.86 As quantum wells is proposed …

The key challenge for terahertz quantum cascade lasers (THz-QCLs) is to make it operating
at room-temperature. The suppression of thermally activated leakages via high lying …

Terahertz (THz) intersubband absorption spectra in the MgxZn1− xO/ZnO step quantum
wells (SQWs) at the temperature of 77 K have been numerically studied. Electron …