Exciplex liquid-phase thermometer using time-resolved laser-induced fluorescence
作者： Christian Parigger , David H. Plemmons , Ron J. Litchford , San-Mou Jeng
DOI: 10.1364/OL.23.000076
关键词: Dye laser 、 Optics 、 Excited state 、 Laser-induced fluorescence 、 Photoexcitation 、 Optoelectronics 、 Resonance fluorescence 、 Excimer 、 Fluorescence 、 Excimer laser 、 Materials science 、 Analytical chemistry 、 Atomic and Molecular Physics, and Optics
摘要: Pulsed photoexcitation of hydrocarbon fuels doped with organic molecules exhibits a temperature-dependent fluorescence spectrum that is used as the basis for weakly intrusive optical thermometer. By use pulsed excitation from 308-nm 8-ns XeCl excimer laser gated detection emissions n-heptane, we demonstrate time-resolved measurement excited monomer and redshifted excited-state complex (exciplex) can yield sub-1° accuracy temperatures ranging 440??K to vicinity critical temperature (540??K).?The experiments also show exciplex pressure independent below above supercritical pressure.
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