Multiplex rotational CARS of nitrogen, oxygen and carbon monoxide with excimer pumped dye lasers: species identification and thermometry in the intermediate temperature range with high temporal and spatial resolution

Abstract

Pure rotational CARS spectra of N2, O2, air, and CO were obtained using excimer laser-pumped dye-lasers. The combination of the folded BOXCARS phase matching geometry with the broad-band laser multiplex method allowed high spatial and temporal resoln. Species and concn. anal. as well as thermometry up to 700 K were demonstrated, and possible applications are discussed.