Simultaneous Measurement of Multiparameter of Diesel Engine Exhaust Based on Mid-infrared Laser Absorption Spectroscopy

Y Li, X Yang, J Li, Z Du - IEEE Transactions on Instrumentation …, 2023 - ieeexplore.ieee.org
Exhaust parameters of an engine carry vital information that can help to understand its
transient duty cycles. We developed a mid-infrared wavelength modulation spectroscopic …

Line width at half maximum of the Voigt profile in terms of Gaussian and Lorentzian widths: Normalization, asymptotic expansion, and chebyshev approximation

AAS AlOmar - Optik, 2020 - Elsevier
Normalization by the Voigt width was applied to both the Lorentz and Gaussian widths in the
half width at half maximum (HWHM) equation. The normalization simplified the HWHM …

Effect of laser linewidth on the tunable diode laser absorption spectroscopy system

Z Rui, W Fang, W Yan, Y Bo, G Hong-Fei… - Laser …, 2020 - iopscience.iop.org
In this paper, a theoretical investigation of the influence of laser linewidth on the tunable
diode laser absorption spectroscopy system is presented. The theoretical analysis and …