CARS is being developed for practical temperature and concentration measurement in flames. Current research effort includes the testing of a high-performance conventional CARS spectrometer and the study of electronic resonance enhancement for improved detection sensitivities. The conventional CARS spectrometer is described. It allows BOXCARS measurements with background cancellation to be made. The spectral resolution is adjusted at 0. 7 or 0. 07 cm** minus **1 in the narrow-band mode, and 0. 7 cm** minus **1 in the broadband mode with an OMA for single-shot spectroscopy. Typical results obtained with this instrument on a simulated turbomachine combustor are presented. The detectivity is 100-1000 ppm in general. With resonance-enhanced CARS, one expects gains on the order of 100-1000, as demonstrated recently in I//2 vapor.