Rotating detonation engines (RDEs) require advanced rapid combustion diagnostic
techniques to better understand their complex detonation processes. A fast mid-infrared …

Real-time and in situ water vapor (H 2 O) sensors are increasingly demanded to indicate
thermochemical parameters of energy systems. As an accurate, fast and non-intrusive …

Laser absorption spectroscopy tomography is a technique for combustion diagnosis that
provides two-dimensional temperature and species concentration measurements. However …

Laser absorption tomography (LAT) has been widely employed to capture two/three-
dimensional reactive flow-field parameters with a penetrating spatiotemporal resolution. In …

Exhaust gas temperature (EGT) is a key parameter in diagnosing the health of gas turbine
engines (GTEs). In this article, we propose a model-driven spectroscopic network with strong …

A mid-infrared quantum cascade laser (Mid-IR QCL) coupled with a Single Pass Cell and a
Multi Pass Cell, was utilized to measure ammonia (NH 3) absorption spectroscopic …

In the field of accurate measurement of gas concentration by Tunable Diode Laser
Absorption Spectroscopy (TDLAS) technology, the fluctuation of environmental pressure …

Tunable diode laser absorption spectroscopy (TDLAS) techniques are widely used in
combustion monitoring by using direct absorption spectroscopy (DAS). However, the DAS …

The concentration of gases in gas streams can be monitored using sensors. However, gas
sensors can lose their response accuracy due to mechanical wear or damage, and …

Heterodyne phase-sensitive dispersion spectroscopy (HPSDS) is a quantitative non-
intrusive gas sensing technique based on the determination of the refractive index of the …