Environment effect on the vibrational dephasing of HCl, and HCl containing complexes, probed in van der Waals solids

The vibrational coherence of the H-Cl oscillator in the monomer as well as in small clusters ((HCl)x and (HCl)x(N2)n) trapped in argon and nitrogen matrices is explored by means of time-resolved one color degenerate four wave mixing experiments. The time and spectral resolution of the laser source, a picosecond OPO laser, enables the measurement of the vibrational dephasing time of HCl in various well defined (HCl)x(N2)n structures. The results highlight the environment effect on the dephasing processes.