Imaging of molecular hydrogen and oxygen by single and two-photon fluorescence using laser and flashlamp sources

Diskin, G and Lempert, W. and Miles, R and Kumar, V. and Glesk, Ivan; (1991) Imaging of molecular hydrogen and oxygen by single and two-photon fluorescence using laser and flashlamp sources. In: AIAA 29th Aerospace Meeting. American Institute of Aeronautics and Astronautics, United States.

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Abstract

Two flow visualization techniques, i.e., simultaneous two-dimensional fluorescence imaging of H2 and O2 in a diffusion flame, and quasi-linear fluorescence imaging of O2, are presented. The first uses an injection-locked argon-fluoride excimer laser and a partial overlap of a two-photon ground state absorption in H2 with a single photon absorption from a vibrational level in O2. The second uses a simple, high-intensity ultraviolet flashlamp which provides a flux of photons in the 180-195 nm range, sufficient to produce a quasi-one-dimensional fluorescence image of hot/room temperature oxygen. Both techniques do not require that a seed material be introduced into the flow, they can image major flow constituents, and provide an instantaneous snapshot of the flow.

ORCID iDs

Diskin, G, Lempert, W., Miles, R, Kumar, V. and Glesk, Ivan ORCID logoORCID: https://orcid.org/0000-0002-3176-8069;
  • Item type:Book Section
    ID code:48194
    Dates:
    Date
    Event
    7 January 1991
    Published
    Keywords:argon lasers, diffusion flames, excimer lasers, flash lamps, flow visualization, hydrogen, laser induced fluorescence, Optics. Light, Atomic and Molecular Physics, and Optics
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:21 May 2014 11:25
    Last modified:20 Mar 2021 01:52
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/48194
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