This is a comprehensive, critical, and pedagogical review of volumetric emission
tomography for combustion processes. Many flames that are of interest to scientists and …

Infrared laser-absorption spectroscopy (IR-LAS) sensors play an important role in
diagnosing and characterizing a wide range of combustion systems. Of all the laser …

Optical imaging techniques are ubiquitous for the resolution of non-uniformities in gas flows.
Planar imaging techniques such as laser-induced fluorescence are well established and …

Laser absorption spectroscopy (LAS) has been rapidly developed and widely applied to
combustion diagnosis in recent decades. As a cost-effective tool for measuring multiple …

This paper describes a novel laser diagnostic and its demonstration in a practical aero-
propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral …

A novel technique has been developed to obtain simultaneous tomographic images of
temperature and species concentration based on hyperspectral absorption spectroscopy …

Nonlinear tomographic absorption spectroscopy (NTAS) is an emerging gas sensing
technique for reactive flows that has been proven to be capable of simultaneously imaging …

This paper reports the simultaneous measurements of multiple flow parameters in a scramjet
facility operating at a nominal Mach number of 2.5 using a sensing system based on tunable …

Hyperspectral absorption tomography (HAT) reconstructs the distribution of key gas
parameters, including composition, pressure, and temperature, from multi-beam absorbance …

This paper proposes a technique that can simultaneously retrieve distributions of
temperature, concentration of chemical species, and pressure based on broad bandwidth …