IR-UV DOUBLE-RESONANCE EXPERIMENT USING A CO AND A CUHBR (HYBRID) LASER-PUMPED DYE-LASER - APPLICATION TO THE SPECTROSCOPY OF CS2

An infrared-Ultraviolet Double Resonance (IR-UV DR) experiment has bee n built in order to resolve and identify single rotational levels in d ense molecular spectra. The system is based on a CO laser, working on the CO fundamental transition (Delta upsilon = 1), and a frequency dou bled dye laser pumped by a recently developed copper vapor ''HyBrID'' or ''CuHBr'' laser. We demonstrate the promising nature of the CuHBr l aser as a pump laser for high power dye lasers. Different excitation s chemes can be used with this experiment in order to obtain information about excited electronic states. We also report here preliminary resu lts on the spectroscopy of the carbon disulfide (CS2) molecule. (C) 19 98 Published by Elsevier Science B.V. All rights reserved.