Cavity ring-down (CRD) spectroscopy is a direct absorption technique, which can be
performed with pulsed or continuous light sources and has a significantly higher sensitivity …

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

We review the most recent technological and application advances of quantum cascade
lasers, underlining the present milestones and future directions from the Mid-infrared to the …

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 …

The vast majority of gaseous chemical substances exhibit fundamental vibrational
absorption bands in the mid-infrared spectral region (≈ 2–25 µm), and the absorption of …

The editors have assembled a world-class group of contributors who address the questions
the combustion diagnostic community faces. They are chemists who identify the species to …

There is an increasing need in many chemical sensing applications ranging from industrial
process control to environmental science and medical diagnostics for fast, sensitive, and …

Infrared (IR) spectroscopic imaging systems are a powerful tool for visualizing molecular
microstructure of a sample without the need for dyes or stains. Table-top Fourier transform …

A new technique of cavity enhanced absorption spectroscopy is described. Molecular
absorption spectra are obtained by recording the transmission maxima of the successive …

State-of-the-art quantum-and interband-cascade-based chemical sensors may be effective
new tools for the identification and quantification of trace gases in human breath for clinical …