A STUDY OF INTERMOLECULAR VIBRATIONAL FREQUENCIES OF PHENOL (H2O)(3) BY SPECTRAL HOLE-BURNING SPECTROSCOPY

The vibronic spectrum of the phenol.(H2O)(3) complex is obtained by persistent spectral hole burning. The population of the neutral complex is depleted by tuning a hole burning laser to a strong absorption line of the complex. The depopulation is probed by the decrease of fluorescence intensity induced by a second laser. Only transitions which share a common ground state level with the hole burning laser are recorded. Twelve intermolecular frequencies have been found in the region 0-220 cm(-1) relative to the electronic origin of the complex.