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 …

We designed and manufactured a set of high-sensitivity photoacoustic (PA) gas detector
based on differential multi-pass cell (DMPC) with a chamber volume of only 162 mL, which …

To realize all-optical passive detection of CH 4 in narrow spaces and harsh environments, a
compact cantilever-enhanced fiber-optic photoacoustic sensor (CEFPS) resistant to …

A photoacoustic (PA) gaseous halocarbon refrigerants and extinguishing agent detector
based on a mid-infrared broadband source was developed. H1301 (extinguishing agent) …

A rapid photoacoustic (PA) exhaust gas analyzer is presented for simultaneous
measurements of nitrogen dioxide (NO2) and sulfur dioxide (SO2). A laser diode (LD) …

A miniaturized optical fiber photoacoustic gas sensor enhanced by dense multibutterfly
spots is reported for the first time. The principle of space light transmission of neglecting …

A highly sensitive multi-pass absorption enhanced photoacoustic (PA) spectrometer
(MPAEPAS) based on combined light sources for dissolved gas analysis (DGA) in oil has …

A fiber-optic photoacoustic CO sensor for gas insulation equipment is proposed, which relies
on F–P interferometric cantilever-based differential lock-in amplification and optical …

In this paper, a gas sensing technique based on multi-resonance photoacoustic
spectroscopy (M-PAS) is firstly proposed for simultaneous detection of multi-component gas …

Carbon dioxide (CO 2) is a colorless and odorless gas. The imbalanced CO 2
concentrations can have detrimental effects, therefore numerous CO 2 gas sensors have …