Method of adaptive wide dynamic range gas concentration detection based on optimized direct absorption spectroscopy

Q Wang, P Sun, Z Zhang, Y Cai, W Huang, T Pang… - Optics …, 2023 - opg.optica.org
For wide dynamic range gas concentration detection based on tunable diode laser
absorption spectroscopy (TDLAS), direct absorption spectroscopy (DAS) and wavelength …

Smoldering peat fire detection by time-resolved measurements of transient CO2 and CH4 emissions using a novel dual-gas optical sensor

M Raza, Y Chen, J Trapp, H Sun, X Huang, W Ren - Fuel, 2023 - Elsevier
A compact and sensitive dual-gas laser absorption sensor was developed for smoldering
peat fire detection by real-time monitoring of transient CO 2 and CH 4 emissions from peat …

Narrow-band multi-component gas analysis based on photothermal spectroscopy and partial least squares regression method

Y Zhou, M Jiang, W Dou, D Meng, C Wang… - Sensors and Actuators B …, 2023 - Elsevier
In spectroscopic multi-component gas sensing, the crosstalk in the overlapping region of gas
absorption spectra will affect the measurement accuracy. This paper reports a new multi …

Ultrastable Laser Wavelength Locking Technique Optimized for WMS-Based Methane Detection

Y Cheng, F Wang, J Wu, R Liang, Q Wang… - IEEE Sensors …, 2023 - ieeexplore.ieee.org
Fixed wavelength modulation spectroscopy (FWMS) featured as that wavelength is
modulated around a constant value instead of a dynamic scanning ramp in the standard …

[HTML][HTML] All-fiber-coupled mid-infrared quartz-enhanced photoacoustic sensors

A Zifarelli, R De Palo, S Venck, F Joulain… - Optics & Laser …, 2024 - Elsevier
Infrared laser-based gas sensors are mature to take the leap from laboratory prototype to
outdoor operation. Considering the demand of high robustness and compactness, the …

Silicon multipass cells for localized multi-parameter gas sensing by absorption spectroscopy

A Fathy, M Magdy, YM Sabry, F Marty… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
Multi-pass gas cells are commonly used in trace gas sensing applications due to their ability
to increase the effective path length of light enhancing the light-gas interactions through the …

Demodulating an acoustic signal stimulated by photo-thermal elastic energy conversion using quartz tuning forks

M Tamilselvi, TM Amirthalakshmi, RP Guru… - Optical and Quantum …, 2024 - Springer
This work describes a quartz-tuning-fork enhanced photo-thermal spectroscopic (QEPTS)
based gas sensors technique. A highly resonant quartz tuning fork with the capability for …

Optical spectroscopy of nanoporous membranes based on anodic alumina in an ammonia gas flow

IN Mikhailov, YV Nikulin, SS Volchkov… - News of Saratov …, 2023 - journals.rcsi.science
Abstract Background and Objectives: Membranes in the form of highly ordered
nanostructures of porous anodic aluminum oxide (PAAO) with adjustable pore properties …

[HTML][HTML] Оптическая спектроскопия нанопористых мембран на основе анодного оксида алюминия в газовом потоке аммиака

ИН Михайлов, Ю Никулин, СС Волчков… - … . Новая серия. Серия …, 2023 - cyberleninka.ru
Методом электрохимического анодирования получены мембраны в виде
высокоупорядоченных наноструктур пористого анодного оксида алюминия (ПАОА) с …

Sensitivity to dark matter couplings from frequency measurements of acetylene optical clocks

FL Constantin - 2023 Joint Conference of the European …, 2023 - ieeexplore.ieee.org
SummaryCouplings of ultralight dark matter candidates to the particles of the Standard
Model leading to time variations of the fundamental constants are addressed through …