Abstract
Laser-induced fluorescence (LIF) and two-dimensional laser-induced fluorescence were used for measurement of the fluorescence lifetime of the state of BaO molecules in the laser-ablation process of and in the oxygen background gas. The zero-pressure lifetime and the quenching rate were also determined as and , respectively. The spatiotemporal changes of the collisional quenching of BaO molecules were successfully visualized, and the influence of the quenching on the spatial distribution imaging of BaO molecule was corrected.
© 1999 Optical Society of America
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