Correction of the quenching effect in two-dimensional laser-induced fluorescence measurement of laser-ablation processes

Abstract

Laser-induced fluorescence (LIF) and two-dimensional laser-induced fluorescence were used for measurement of the fluorescence lifetime of the A(1)?(+) state of BaO molecules in the laser-ablation process of BaTiO(3) and YBa(2)Cu(3)O(7-x) in the oxygen background gas. The zero-pressure lifetime and the quenching rate were also determined as tau(0)=357ns and k=5.1 x 10(-6)ns(-1)mTorr(-1) , 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.