Estimation of energy and time parameters of laser radiation for efficient excitation of phosphorus oxide fluorescence
S.M. Bobrovnikov1,2, E.V. Gorlov1,2, V.I. Zharkov1, S.N. Murashko1,2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2National Research Tomsk State University, Tomsk, Russia
Keywords: organophosphate, laser fragmentation, phosphorus oxide, PO-fragment, laser-induced fluorescence
Abstract
We present a mathematical model of the process of laser-induced fluorescence of phosphorus oxide (PO) molecules. Based on the model, the dependences of the fluorescence intensity of PO molecules on the energy and time parameters of the exciting laser radiation are derived. It has been established that the dependence of the PO fluorescence signal on the energy density of the exciting radiation has the form of a saturation curve, and the dependence on the pulse duration under real atmospheric conditions has a local maximum. It is shown that the optimal pulse duration decreases with the energy density of the exciting radiation.
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