Improvement of the detection sensitivity for tunable diode laser absorption spectroscopy: A review

S Lin, J Chang, J Sun, P Xu - Frontiers in Physics, 2022 - frontiersin.org
Tunable Diode Laser Absorption Spectroscopy (TDLAS), a trace gas sensing technology
based on infrared absorption spectroscopy, has been developed rapidly in the past few …

Application of TDM and FDM methods in TDLAS based multi-gas detection

Y Feng, J Chang, X Chen, Q Zhang, Z Wang… - Optical and Quantum …, 2021 - Springer
Multi-gas tunable diode laser absorption spectroscopy (TDLAS) system based on time
division multiplexing (TDM) demodulation technology which combine with frequency …

Research on high-precision oxygen partial pressure sensor based on TDLAS technology

F He, S Li, B Liu, Z Jin, J Li, F Liu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Aiming at the demand of oxygen partial pressure measurement in aerospace and aviation, a
tunable diode laser absorption spectroscopy (TDLAS) technique is proposed to realize the …

[HTML][HTML] Element different method for three-dimensional radiative transfer within heterogeneous media

Y Li, Y Sun, R Zhou, S Li, A Zheng, J Ma - Results in Physics, 2023 - Elsevier
The ability to accurately determine three-dimensional radiative intensity with high spatial
and angular resolution is crucial for the diagnosis of radiative combustion. However, the non …

A non-absorption-loss immune TDLAS sensor for online Mach number evaluation in supersonic flows

W Zhou, Z Cao, S Dou, X Duan, Q Yang, L Xu - Measurement, 2025 - Elsevier
Tunable diode laser absorption spectroscopy (TDLAS) techniques are widely used in
combustion monitoring by using direct absorption spectroscopy (DAS). However, the DAS …

Dynamic inversion and correction of ammonia pressure within the range 6611–6614 cm− 1

Q Li, H Li, L Liu, Y Zhang, Y Gao, J Liao, Q Tang - Measurement, 2024 - Elsevier
Laser absorption spectroscopy is widely applied in gas concentration detection while the
measurement accuracy would be affected by fluctuations in the environmental pressure …

Novel spectroscopy method to reveal optimal culture conditions in Escherichia coli fermenter

J Chen, H Wu, J Chen, J Zheng, W Liu… - Letters in Applied …, 2024 - academic.oup.com
Fermentation engineering is critical for mass-producing chemicals, food additives, and
medicines, where optimal culture conditions maximize microbial growth and metabolite …

Combining TDLAS and multi-fusion algorithms for methane gas concentration detection

G Shi, X Song, T Dong - Optoelectronics Letters, 2024 - Springer
High-precision methane gas detection is of great importance in industrial safety, energy
production and environmental protection, etc. However, in the existing measurement …

Correlation of absorption spectrum properties of methane with coupling variables between temperature and concentration

B Duan, Y Lv, Z Wang, D Wang, D Li, B Yao - Optik, 2019 - Elsevier
When using tunable diode laser absorption spectroscopy to detect methane on-line, the line
intensity of methane absorption spectrum is affected by the change of ambient temperature …

12-ns frequency chirped pulse for self-calibrated gas sensing

G Shi, D Homa, X Su, G Pickrell… - IEEE Photonics …, 2020 - ieeexplore.ieee.org
We present the generation of 12.1 ns frequency chirped pulses from a distributed feedback
laser diode via injection current modulation and demonstrate its application to absorption …