Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …

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 …

Advances in spectroscopy have the potential to improve our understanding of agricultural
processes and associated trace gas emissions. We implement field-deployed, open-path …

Molecular dispersion spectroscopy encompasses a group of spectroscopic techniques for
gas analysis that retrieve the characteristics of the sample from the measurement of the …

Due to technological advances, mid-infrared (MIR) gas sensors have gained importance in
the last decade. Light sources and detectors for the MIR range have become available at …

Rapid development of a new type of air-core guiding fibers, the so-called Antiresonant
Hollow-Core Fibers (ARHCFs), have brought a wide range of new application areas of the …

Heterodyne phase-sensitive dispersion spectroscopy (HPSDS) provides an agile method for
gas detection by measuring the phase of an amplitude modulation signal. However …

A resolved line pair was selected for simultaneous measurement of carbon monoxide (CO)
and carbon dioxide (CO2) in the near-infrared (NIR) region. The spectral lines of CO and …

Advances in natural gas extraction technology have led to increased activity in the
production and transport sectors in the United States and, as a consequence, an increased …

A methane sensor based on dispersion spectroscopy is presented in this paper. A standard
Mach–Zehnder modulator working in carrier suppression mode is adopted to generate a …