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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 22 — Aug. 1, 2006
  • pp: 5725–5732

Simultaneous measurement of temperature and chemicalspecies concentrations with a holographic interferometer and infrared absorption

Tadashi Konishi, Akihiko Ito, Yuji Kudo, Akira Narumi, Kozo Saito, John Baker, and Peter M. Struk  »View Author Affiliations


Applied Optics, Vol. 45, Issue 22, pp. 5725-5732 (2006)
http://dx.doi.org/10.1364/AO.45.005725


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Abstract

What is believed to be a new technique that allows for the simultaneous measurement of 2D temperature and chemical species concentration profiles with high spatial resolution and fast time response was developed and tested successfully by measuring a thin layer of fuel vapor created over a volatile fuel surface. Normal propanol was placed in an open-top rectangular container, and n-propanol fuel vapor was formed over the propanol surface in a quiescent laboratory environment. An IR beam with a wavelength of 8–13 μm emitted from a heated plate and a He–Ne laser beam with a wavelength of 632 nm were combined and passed through the n-propanol vapor layer, and both beams were absorbed by the vapor layer. The absorption of the IR beam was recorded by an IR camera, and the He–Ne laser was used to form a holographic interferogram. Two-dimensional temperature and propanol vapor concentration profiles were, respectively, determined by the IR absorption and the fringe pattern associated with the holographic interferogram. This new measurement technique is a significant improvement over the dual wavelength holographic interferometry that has been used previously to measure temperature and fuel concentration, and it is ready for application under different types of fire and flame conditions.

© 2006 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(130.3060) Integrated optics : Infrared

ToC Category:
Holography

History
Original Manuscript: September 16, 2005
Revised Manuscript: March 7, 2006
Manuscript Accepted: March 10, 2006

Citation
Tadashi Konishi, Akihiko Ito, Yuji Kudo, Akira Narumi, Kozo Saito, John Baker, and Peter M. Struk, "Simultaneous measurement of temperature and chemicalspecies concentrations with a holographic interferometer and infrared absorption," Appl. Opt. 45, 5725-5732 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-22-5725

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