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Techniques to enhance the photoacoustic signal for trace gas sensing: A review
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 …
acoustic waves, is widely used for gas sensing. This paper summarizes and discusses most …
Direct absorption and photoacoustic spectroscopy for gas sensing and analysis: a critical review
Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …
Differential quartz-enhanced photoacoustic spectroscopy
C Zhang, S Qiao, Y He, S Zhou, L Qi, Y Ma - Applied Physics Letters, 2023 - pubs.aip.org
In this paper, a differential quartz-enhanced photoacoustic spectroscopy (D-QEPAS) sensor
is reported. The differential photoacoustic cell (PAC) was used to generate the …
is reported. The differential photoacoustic cell (PAC) was used to generate the …
Dense multibutterfly spots-enhanced miniaturized optical fiber photoacoustic gas sensor
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 …
spots is reported for the first time. The principle of space light transmission of neglecting …
[HTML][HTML] Integrated near-infrared fiber-optic photoacoustic sensing demodulator for ultra-high sensitivity gas detection
An integrated near-infrared fiber-optic photoacoustic sensing demodulator was established
for ultra-high sensitivity gas detection. The demodulator has capacities of interference …
for ultra-high sensitivity gas detection. The demodulator has capacities of interference …
Fiber-optic photoacoustic gas sensing: a review
Fiber-optic photoacoustic (PA) sensing has important applications in trace gas detection.
The fiber-optic Fabry-Perot acoustic sensor implemented applying a cantilever is a novel …
The fiber-optic Fabry-Perot acoustic sensor implemented applying a cantilever is a novel …
[HTML][HTML] Photoacoustic-based gas sensing: A review
The use of the photoacoustic effect to gauge the concentration of gases is an attractive
alternative in the realm of optical detection methods. Even though the effect has been …
alternative in the realm of optical detection methods. Even though the effect has been …
Ultra-high sensitive photoacoustic gas detector based on differential multi-pass cell
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 …
based on differential multi-pass cell (DMPC) with a chamber volume of only 162 mL, which …
[HTML][HTML] Small-volume highly-sensitive all-optical gas sensor using non-resonant photoacoustic spectroscopy with dual silicon cantilever optical microphones
A small-volume highly-sensitive photoacoustic spectroscopy (PAS) methane detection
system based on differential silicon cantilever optical microphones (SCOMs) is proposed …
system based on differential silicon cantilever optical microphones (SCOMs) is proposed …
[HTML][HTML] Ppb-level detection of methane based on an optimized T-type photoacoustic cell and a NIR diode laser
This paper presents an optimized T-type resonant photoacoustic (PA) cell for methane (CH
4) gas detection. The noise transmission coefficients and PA field distributions of the T-type …
4) gas detection. The noise transmission coefficients and PA field distributions of the T-type …