Mid-infrared quantum cascade lasers are semiconductor injection lasers whose active core
implements a multiple-quantum-well structure. Relying on a designed staircase of …

The mid-infrared (mid-IR) is a wavelength range with a variety of technologically vital
applications in molecular sensing, security and defense, energy conservation, and …

In the short space of 15years since their first demonstration, quantum cascade lasers have
become the most useful sources of tunable mid-infrared laser radiation. This Letter …

Continuous wave operation of quantum cascade lasers is reported up to a temperature of
312 kelvin. The devices were fabricated as buried heterostructure lasers with high-reflection …

Tunable diode laser absorption spectroscopy (TDLAS) has become a proven method of
rapid gas diagnostics. In the present review an overview of the state of the art of TDL-based …

Recent advances in room-temperature, near-IR and visible diode laser sources for tele-
communication, high-speed computer networks, and optical data storage applications are …

Quantum cascade (QC') lasers are reviewed. These are semiconductor injection lasers
based on intersubband transitions in a multiple-quantum-well (QW) heterostructure …

High-power and highly directional semiconductor microcylinder lasers based on an optical
resonator with deformed cross section are reported. In the favorable directions of the far …

Pulsed single mode operation of distributed feedback quantum cascade lasers is reported
above room temperature at both 5.4 and 8 μm wavelengths. Peak optical powers up to 60 …

Motivated by the technical and economic difficulties in further miniaturizing silicon-based
transistors with the present fabrication technologies, there is a strong effort to develop …