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

Optics Letters
Robert Stevens, P Ewart

Abstract

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 NO2/N2 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 microm 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.

References

Nov 17, 2007·Optics Letters·Roger C HartR Jeffrey Balla
Dec 7, 2007·Optics Letters·S SchlampT H Sobota
Dec 19, 2007·Optics Letters·D J WalkerP Ewart
Dec 19, 2007·Optics Letters·A A MaznevJ A Rogers
Jun 20, 1995·Applied Optics·E B CummingsH G Hornung

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Citations

Jun 25, 2016·Applied Spectroscopy·Johannes KieferZhongshan Li

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