COHERENT RAMAN SPECTROSCOPY IN GASES

The instrumental resolution in nonlinear coherent Raman spectroscopy is determined by the convoluted linewidths of the lasers used for excitation. This is of special importance for the investigation of high resolution rotation-vibrational spectra of gases. It is now possible not only to determine line positions with accuracies better than 10-3 cm-1, but also to study linewidths as a function of pressure. Methods and results of coherent anti-Stokes Raman scattering are treated here