Multiplex pure rotational coherent anti-Stokes Raman spectroscopy in a molecular beam

Abstract:

Pure rotational coherent anti-Stokes Raman spectroscopy using a single broadband dye-laser has been applied to study rotational energy distribution of molecules in a pulsed supersonic beam. The multiplex BOXCARS configuration allows accurate determination of rotational constants and rotational temperatures, and offers a great number of advantages over other methods. The technique was applied to calibrate the cooling effect of a pulsed molecular beam of N2 and to study the rotational energy distributions of infrared multiphoton excited C2H4.