Abstract

Quantitative one-dimensional single-pulse temperature measurements by broadband N2 vibrational coherent anti-Stokes Raman scattering (CARS) are presented. A planar BOXCARS phase-matching geometry was used to generate the CARS signal along a 6.16-mm path positioned perpendicularly to the beam propagation. Depending on the imaging optics used, a spatial resolution of 86 μm was achieved. The applicability of this technique for measuring temperature gradients is demonstrated in a premixed laminar CH4–air flame.

© 1996 Optical Society of America

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