The formulas are derived that enable calculations of intersubband absorption coefficient
within nonequilibrium Green's function method applied to a single-band effective-mass …

Tuning the wavelength of emitted radiation is a tremendous feature of quantum cascade
lasers which enables their use in various applications. Usually, this tuning is executed by the …

Focused ion beam processing has been applied to fabricate coupled-cavity
AlInAs/InGaAs/InP quantum cascade lasers. The evolution of the mode spectrum of the two …

It is well known that a long time has passed since the proposed theoretical ideas and
principles of the quantum cascade laser (QCL)[1, 2] and quantum cascade detector (QCD)[3 …

Abstract Quantum Cascade Lasers (QCLs) consist of several semiconductor materials
sandwiched together. The QCL achieves stimulated emission in the mid-IR (m-IR) to the THz …

The theory of electron-phonon interaction in a separate cascade of the broadband quantum
cascade detector operating in far-infrared range is developed within the models of …