Quantum cascade lasers (QCL) are the first room temperature semiconductor laser source
for the mid-IR spectral region, triggering substantial development for the advancement of …

Remote chemical detection in the atmosphere or some specific space has always been of
great interest in many applications for environmental protection and safety. Laser absorption …

We report the development of a mid-infrared fiber-coupled laser absorption sensor for in situ
and simultaneous detection of NH 3 and NO, which is suitable for flue gas monitoring at the …

A calibration-free scanned wavelength modulation spectroscopy scheme requiring minimal
laser characterization is presented. Species concentration and temperature are retrieved …

The accuracy of quantitative absorption spectroscopy depends on correctly distinguishing
molecular absorption signatures in a measured transmission spectrum from the varying …

In this paper, a multiheterodyne architecture for molecular dispersion spectroscopy based
on a coherent dual-comb source generated using a single continuous wave laser and …

In this Letter, we present a method of performing broadband mid-infrared spectroscopy with
conventional, free-running, continuous wave Fabry-Perot quantum cascade lasers (FP …

Laser dispersion spectroscopy provides an attractive way of gas sensing by measuring
refractive index rather than absorption. The previous dispersion gas sensors were mostly …

Mid-IR dispersion spectroscopy is an attractive, novel approach to liquid phase analysis that
extends the possibilities of traditional methods based on the detection of absorption via …

In this paper we present a prototype instrument for remote open-path detection of nitrous
oxide. The sensor is based on a 4.53 μm quantum cascade laser and uses the chirped laser …