Abstract

A few forms of coherent Raman spectroscopy^1,2 have demonstrated the capability of creating excess populations in specific molecular rovibrational states. Although this produces an undesirable saturation effect in some contexts,¹ it is intrinsic to the signal strength of others² and makes several Raman-optical double-resonance schemes feasible. One such scheme,³ which combines stimulated Raman spectroscopy with ionization detection, has been employed in double-resonance studies of NO. Subsequently,⁴ we have employed visible laser- induced fluorescence (LIP) to detect coherent Raman excitation of a polyatomic molecule, D₂CO.

© 1984 Optical Society of America