Laser-induced fluorescence from the F0(-) state of the HgZn excimer.

Abstract

The relative intensities of the vibrational components in the laser-induced fluorescence spectrum arising from a particular molecular vibronic state are usually independent of the exciting wave-length and thus do not depend on the lower vibronic state from which the excitation takes place. We have observed that although the intensity pattern in the fluorescence spectrum from the E0 − (ν'=0) level is independent of the excitation wavelength, the relative intensities of the bands in the fluorescence spectrum from the E0 − (ν'=1) level do depend on the wavelength of the exciting light. We have also observed that the vibrational intensity distribution in the excitation spectrum of the E0 − (ν'=1) level depends on the fluorescence wavelength at which it is monitored, whereas the intensity profile in the excitation spectrum of the E0 − (ν'=0) level is independent of the monitoring wavelength