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
Original Manuscript: April 5, 1996
Published: October 1, 1996
J. Jonuscheit, A. Thumann, M. Schenk, T. Seeger, and A. Leipertz, "One-dimensional vibrational coherent anti-Stokes Raman-scattering thermometry," Opt. Lett. 21, 1532-1534 (1996)