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 …

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 …

This paper reviews the analysis of exhaled breath, a rapidly growing field in noninvasive
medical diagnostics that lies at the intersection of physics, chemistry, and medicine. Current …

Quantum cascade lasers (QCLs) are a prominent semiconductor laser source operating in
the mid-infrared and terahertz regimes. As is typical with semiconductor lasers, QCLs …

A dual-section, single-mode quantum cascade laser is demonstrated in continuous wave at
room temperature with up to 114 nm (50 cm− 1) of tuning near a wavelength of 4.8 μm …

This article presents design issues of high-sensitive laser absorption spectroscopy systems
for nitrogen oxides (NOx) detection. Examples of our systems and their investigation results …

We present a bi-functional surface emitting and surface detecting mid-infrared device
applicable for gas-sensing. A distributed feedback ring quantum cascade laser is …

Grating-coupled surface-emitting (GCSE) lasers generally operate with a double-lobed far-
field beam pattern along the cavity-length direction, which is a result of lasing being favored …

Microresonator-based lasers are key light sources in photonic integrated circuits for future
optical communication. Recently developed on-chip sensing makes microcavity lasers at …

We demonstrate a surface grating coupled substrate emitting quantum cascade ring laser
with high power room temperature continuous wave operation at 4.64 μ m⁠. A second order …