Six years after their birth, terahertz quantum-cascade lasers can now deliver milliwatts or
more of continuous-wave coherent radiation throughout the terahertz range—the spectral …

The terahertz (THz) frequency quantum cascade laser (QCL) is a compact source of THz
radiation offering high power, high spectral purity and moderate tunability. As such, these …

New and emerging terahertz technology applications make this a very exciting time for the
scientists, engineers, and technologists in the field. New sensors and detectors have been …

High-power terahertz quantum cascade lasers Page 1 High-power Terahertz Quantum
Cascade Lasers Benjamin S. Williams, Sushil Kumar, and Qing Hu Department of Electrical …

The state-of-the art of terahertz heterodyne receivers are reviewed. Emphasis is placed on
front-end components such as mixers and local oscillators. The back-end technology is …

Quantum cascade lasers, can be considered the primary achievement of electronic band
structure engineering, showing how artificial materials can be created through quantum …

The discovery of hot-electron phenomena in a thin superconducting film in the last century
was followed by numerous experimental studies of its appearance in different materials …

Single-mode surface-emitting distributed feedback terahertz quantum-cascade lasers
operating around 2.9 THz are developed in metal-metal waveguides. A combination of …

The design and the performance of a 4.7-THz local oscillator (LO) for the GREAT (German
REceiver for Astronomy at Terahertz frequencies) heterodyne spectrometer on SOFIA, the …

A metal–metal waveguide quantum cascade laser with an abutted silicon
hyperhemispherical lens is demonstrated at∼ 4.1 THz. The device produced 145 mW of …