[HTML][HTML] Laser sensors for energy systems and process industries: Perspectives and directions

A Farooq, ABS Alquaity, M Raza, EF Nasir… - Progress in Energy and …, 2022 - Elsevier
Sensors are perhaps the most important and integral components of our modern society.
With global warming and environmental pollution garnering ever-increasing attention, as …

Techniques to enhance the photoacoustic signal for trace gas sensing: A review

F Wang, Y Cheng, Q Xue, Q Wang, R Liang… - Sensors and Actuators A …, 2022 - Elsevier
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 …

[HTML][HTML] Ppb-level detection of methane based on an optimized T-type photoacoustic cell and a NIR diode laser

Z Gong, T Gao, L Mei, K Chen, Y Chen, B Zhang… - Photoacoustics, 2021 - Elsevier
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 …

On-chip optical gas sensors based on group-IV materials

J Wu, G Yue, W Chen, Z Xing, J Wang, WR Wong… - ACS …, 2020 - ACS Publications
Compact and smart optical gas sensors have attracted significant attention over the past few
decades. Among the materials used for developing such gas sensors, group-IV materials …

[PDF][PDF] Photoacoustic spectroscopy in trace gas monitoring

FJM Harren, SM Cristescu - 2019 - repository.ubn.ru.nl
Update based on the original article by Frans JM Harren, Gina Cotti, Jos Oomens, Sacco te
Lintel Hekkert, Encyclopedia of Analytical Chemistry,© 2000, John Wiley & Sons, Ltd. time …

Photoacoustic spectroscopy based on vertical cruciform multi-stepped photoacoustic cell achieving ppb-level acetylene detection

S Xu, Q Wang, Z Zhu, J Wang, X Zou, Z Li… - Sensors and Actuators B …, 2024 - Elsevier
A photoacoustic spectroscopy (PAS) based on vertical cruciform multi-stepped
photoacoustic cell (CMS-PAC) was developed to achieve highly sensitive detection of trace …

Simultaneous detection of greenhouse gases CH4 and CO2 based on a dual differential photoacoustic spectroscopy system

F Wang, J Wu, Y Cheng, L Fu, J Zhang, Q Wang - Optics express, 2023 - opg.optica.org
In addition to the atmospheric measurement, detection of dissolved carbon oxides and
hydrocarbons in a water region is also an important aspect of greenhouse gas monitoring …

Highly sensitive acetylene detection based on multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy and a fiber amplified diode laser

Y Ma, S Qiao, Y He, Y Li, Z Zhang, X Yu, FK Tittel - Optics Express, 2019 - opg.optica.org
In this paper, a multi-pass retro-reflection-cavity-enhanced photoacoustic spectroscopy
(PAS) based gas sensor is reported for the first time. The multi-pass retro-reflection-cavity …

High-sensitivity photoacoustic gas detector by employing multi-pass cell and fiber-optic microphone

B Zhang, K Chen, Y Chen, B Yang, M Guo, H Deng… - Optics express, 2020 - opg.optica.org
A high-sensitivity photoacoustic (PA) spectroscopy (PAS) system is proposed for dual
enhancement from both PA signal excitation and detection by employing a miniaturized …

Fiber-ring laser intracavity QEPAS gas sensor using a 7.2 kHz quartz tuning fork

Q Wang, Z Wang, W Ren, P Patimisco… - Sensors and Actuators B …, 2018 - Elsevier
A novel trace gas sensor exploiting fiber-ring laser intracavity quartz-enhanced
photoacoustic spectroscopy (FLI-QEPAS) is reported. The gas sensor system couples an …