We characterize the performance of a quantum well infrared photodetector (QWIP), which is
fabricated as a photonic crystal slab (PCS) resonator. The strongest resonance of the PCS is …

Different approaches to power scaling of 4.5-to 5-μm emitting quantum cascade (QC) lasers
by multiemitter beam combining are investigated. Spectral beam combining of linear arrays …

Electrically injected supersymmetric (SUSY) quantum cascade laser (QCL) array of the
wavelength at around 13.4 μm has been demonstrated. By applying SUSY transformations …

We report the observation of the Fermi energy controlled redirection of the ballistic electron
flow in a three-terminal system based on a small (100 nm) triangular quantum dot defined in …

Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically
coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved …

By incorporating a holographically designed aperiodic photonic lattice within one of the
arms of a Y-coupled Fabry–Perot quantum cascade laser architecture, it has been …

Abstract The Quantum Cascade Laser (QCL)-based terahertz-over-fibre (ToF) concept
combines the strength of QCLs as ultra-wide bandwidth, high speed data sources, with the …

The focus of this thesis was to improve the performance of quantum well infrared
photodetectors (QWIPs). Today, commercially available QWIPs have detectivities up to 10 …

The deflection of the laser beam is achieved without any additional components such as
optic or mechanic systems. This is done by injecting additional direct current into one of the …