A laser-based hydrogen (H2) sensor using wavelength modulation spectroscopy (WMS) was developed for the contactless measurement of molecular hydrogen. The sensor uses a distributed feedback (DFB) laser to target the H2 quadrupole absorption line at 2121.8 nm. The H2 absorption line exhibited weak collisional broadening and strong collisional narrowing effects. Both effects were investigated by […]

“Recent advances in TDLAS, and especially the way a spectrum is analysed, has opened new opportunities and added functionality to combustion analysers.This article will discuss a new signal processing approach that helps extract more information than before from the acquired spectrum. The approach has been designed to help create a new path forward for smart […]