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 impact of design parameters of a spectrophone for quartz-enhanced photoacoustic
spectroscopy on its performance was investigated. The microresonator of spectrophone is …

Quantum cascade (QC) lasers are virtually ideal mid-infrared sources for trace gas
monitoring. They can be fabricated to operate at any of a very wide range of wavelengths …

Antiresonant Hollow-Core Fibers (ARHCFs), thanks to the excellent capability of guiding
light in an air core with low loss over a very broad spectral range, have attracted significant …

A mid-infrared ethane (C 2 H 6) sensor based on a wavelength modulation spectroscopy
(WMS) technique was developed using a thermoelectrically cooled (TEC), continuous-wave …

A continuous wave (CW) quantum cascade laser (QCL) based absorption sensor system
was demonstrated and developed for simultaneous detection of atmospheric nitrous oxide …

We review our recent results in development of high-precision laser spectroscopic
instrumentation using midinfrared quantum cascade lasers (QCLs). Some of these …

Laser absorption spectroscopy as a powerful tool for detecting trace gases has been widely
used in the monitoring of atmospheric greenhouse gases, pollutions, and respiration …

Quartz tuning fork (QTF)-based techniques of photoacoustic spectroscopy and thermoelastic
spectroscopy play a significant role in trace gas sensing due to unique high sensitivity and …

An important guide to the major techniques for generating coherent light in the mid-infrared
region of the spectrum Laser-based Mid-infrared Sources and Applications gives a …