In recent years, sensitive, selective and accurate sensing techniques for ammonia gas
detection have been highly demanded since ammonia is both a commonly utilized gas in …

A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS)
for the sensitive and selective quantification of molecular trace gas species with resolved …

Photoacoustic spectroscopy (PAS), which relies on the detection of absorption-induced
acoustic waves, is widely used for gas sensing. This paper summarizes and discusses most …

Nonlinear optical frequency conversion is one of the most versatile methods to generate
wavelength-tunable laser light in the mid-infrared region. This spectral region is particularly …

We demonstrate a highly sensitive and stable fiber-optic Fabry–Perot cantilever microphone
based on fast demodulated white-light interferometry. The cavity length of the low-finesse …

Sensors | Free Full-Text | Photoacoustic Techniques for Trace Gas Sensing Based on
Semiconductor Laser Sources Next Article in Journal Photoreactions and Structural …

Photoacoustic spectroscopy (PAS) is an ultrasensitive method for gas sensing, which
usually using a capacitive microphone as a signal detector. However, the electric nature of …

This paper overviews recent development in gas detection with micro-and nano-engineered
optical fibers, including hollow-core fibers, suspended-core fibers, tapered optical …

The success of laser-based trace gas sensing techniques crucially depends on the
availability and performance of tunable laser sources combined with appropriate detection …

We report on a spectroscopic technique named intracavity quartz-enhanced photoacoustic
spectroscopy (I-QEPAS) employed for sensitive trace-gas detection in the mid-infrared …