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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper THC2

Techniques for instantaneous optical tomography in flames and fluid flows

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Abstract

Tomography is an established method for reconstructing quantitative 2-D or 3-D spatially resolved measurements from multiangular integrated measurements (projections).1 Optical tomography is a versatile diagnostic technique for the study of combustion and fluid flows.2,3 However, much of the previous optical tomography work has examined stable flames and flows using sequentially recorded projections. Since many interesting flows are highly fluctuating, such as explosions or turbulence, techniques for simultaneous recordings of the projections are desirable. We discussed two such techniques: an arrangement for simultaneous recording of emission projections for determination of excited-state species distributions in flames and a tunable differential interferometer for temperature and density determination through interferometric tomography.

© 1988 Optical Society of America

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