Sensors are perhaps the most important and integral components of our modern society.
With global warming and environmental pollution garnering ever-increasing attention, as …

Infrared laser-absorption spectroscopy (IR-LAS) sensors play an important role in
diagnosing and characterizing a wide range of combustion systems. Of all the laser …

The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

The vast majority of gaseous chemical substances exhibit fundamental rovibrational
absorption bands in the mid-infrared spectral region (2.5–25 μm), and the absorption of light …

Update based on the original article by Frans JM Harren, Gina Cotti, Jos Oomens, Sacco te
Lintel Hekkert, Encyclopedia of Analytical Chemistry,© 2000, John Wiley & Sons, Ltd. time …

Radiocarbon (C 14) concentrations at a 43 parts-per-quadrillion level are measured by
using saturated-absorption cavity ringdown spectroscopy by exciting radiocarbon-dioxide (C …

Spectroscopic techniques are increasingly used for field laser applications in industry and
research. Under field conditions complex gas sensors cannot be considered as stable and …

Since the first demonstration in 1994, progress in the development of quantum cascade
lasers (QCLs) has been breathtakingly rapid. Various techniques based upon novel QCLs …

Although solar radiation management (SRM) through stratospheric aerosol methods has the
potential to mitigate impacts of climate change, our current knowledge of stratospheric …

The off‐axis integrated cavity output spectroscopy (OA‐ICOS) represents a suitable solution
in many applications with a simple structure and high sensitivity. The off‐axis configuration …