激光诱导荧光强度与被测样品温度的关系

研究一种应用较广的油的激光诱导荧光强度（ＬＩＦ）与其本身温度之间的关系。用输出波长为３５５ｎｍ的三倍频Ｎｄ：ＹＡＧ激光器做发光源，用多通道光谱分析仪妆收探测。用ＪＫＹ－１型控温仪水浴的方法控制没的温度，测量不同温度下油的激光诱导荧光强度，从量物理和荧光产生的机理入手对实验进行理论分析，结果表明，在发射光谱稳定不变的民政部下，荧光强度随温度的升高耐减弱。

Relationship Between Intensity of Laser Induced Fluorescence and Oil Temperature

To research the relation of oil's laser induced fluorescence(LIF) intensity and oil temperature, the third(355 nm) harmonics pulsed Nd: YAG laser was used as the exciting source, and a multi track spectrology as the detector, and the intensities of laser induced fluorescence(LIF) of oil under different temperatures were measured. The oil temperature was controlled by water bath. The results of the experiment were analysed with quantum physics and the theory of fluorescence bringing. It was shown that for an invariant exciting spectra, the intensity of laser induced fluorescence drops with the increasing of temperature.