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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 8 — Apr. 15, 2006
  • pp: 1055–1057

Simultaneous single-shot measurement of temperature and pressure along a one-dimensional line by use of laser-induced thermal grating spectroscopy

Robert Stevens and Paul Ewart  »View Author Affiliations

Optics Letters, Vol. 31, Issue 8, pp. 1055-1057 (2006)

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We report a new technique, based on laser-induced thermal grating spectroscopy (LITGS), for time- and space-resolved simultaneous measurement of temperature and pressure along a one-dimensional line. LITGS signals generated in NO 2 N 2 mixtures along a 5 mm line produce a time-varying image that is recorded on a streak camera. The temperature is derived with a precision of 0.3% from the streak images using a rapid Fourier method with a spatial resolution of 150 μ m along the line. The principle of pressure measurement is demonstrated using a sequence of images, and a simple extension of the method to single-shot pressure measurement is discussed.

© 2006 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(190.0190) Nonlinear optics : Nonlinear optics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 7, 2005
Revised Manuscript: September 5, 2005
Manuscript Accepted: September 6, 2005

Robert Stevens and Paul Ewart, "Simultaneous single-shot measurement of temperature and pressure along a one-dimensional line by use of laser-induced thermal grating spectroscopy," Opt. Lett. 31, 1055-1057 (2006)

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