Selective Vibrational Excitation of Formaldehyde X 1A1 by Stimulated Emission Pumping.

摘要

We have demonstrated that Stimulated Emission Pumping (SEP) is an important new spectroscopic and preparative technique. SEP is applicable to any diatomic or polyatomic molecule having an electronically excited state from which laser induced fluorescence is observable, provided that the fluorescence lifetime of the electronically excited level is at least comparable to the laser pulse duration. Other SEP experiments presently in progress have shown that it is possible to measure electric dipole moments of vibrationally excited levels of H2C0, prepare levels of acetylene up to at least 27 800/cm (0.03/cm FWHM) and measure J- to -J energy transfer rates.