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

Quantum cascade lasers are compact devices based on mature compound semiconductors
such as GaAs that take advantage of highly developed optoelectronic fabrication techniques …

Mid-infrared spectroscopy is a sensitive and selective technique for probing molecules in the
gas or liquid phase. Investigating chemical reactions in bio-medical applications such as …

It was recently demonstrated that broadband quantum cascade lasers can operate as
frequency combs. As such, they operate under direct electrical pumping at both mid-infrared …

The quantum cascade laser (QCL) is an important laser source in the mid-infrared and
terahertz frequency range. The past twenty years have witnessed its tremendous …

Portable mid-infrared (mid-IR) spectroscopy and sensing applications require widely
tunable, chip-scale, single-mode sources without sacrificing significant output power …

Quantum cascade laser (QCL) is an important source of electromagnetic radiation in mid
infrared region. Recent research in mid-IR QCLs has resulted in record high wallplug …

The quantum cascade laser (QCL) is becoming the leading laser source in the mid-infrared
(mid-IR) range, which contains two atmospheric transmission windows and many molecular …

We demonstrate room temperature single-mode THz emission at 4 THz based on intracavity
difference-frequency generation from mid-infrared dual-wavelength quantum cascade …

Electrically pumped room-temperature semiconductor sources of tunable terahertz radiation
in 1–5 THz spectral range are highly desired to enable compact instrumentation for THz …