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Updated: Jun 8, 2026

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Calibration source for OH laser-induced fluorescence-density measurements with thermally dissociated H2O in
Abstract:
A calibration technique for OH laser-induced fluorescence (LIF) density measurements through the use of the thermal dissociation of ambient H(2)O in an atmospheric air furnace with a tunable KrF laser has been demonstrated. The stable and uniform concentration of OH produced in the furnace permits direct calibration of LIF signals without the uncertainties associated with reference flames. The presence of OH in atmospheric air that is heated to temperatures exceeding 1500 K is sufficient for LIF measurements with most OH LIF laser systems. The measured OH density is found to agree well with the computed OH chemical-equilibrium density over a temperature range of 1500-1850 K.
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