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 pe rsistent 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 fluores cence intensity induced by a second laser. Only transitions which shar e a common ground state level with the hole burning laser are recorded . Twelve intermolecular frequencies have been found in the region 0-22 0 cm(-1) relative to the electronic origin of the complex.