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The effects of optical scattering on pulsed photoacoustic measurement in weakly absorbing liquids

机译：光散射对弱吸收液体中脉冲光声测量的影响

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In this article, a photoacoustic technique, excited by a pulsed diode laser, is used in a study of optically absorbing and scattering liquids. The article discusses the effects of optical scattering on the photoacoustic source and signal. In the empirical part, varying amounts of milk and carbon powder were added to water to control the absorption and scattering coefficients of the resulting liquids. The results showed that scattering increases the duration of the photoacoustic signal while decreasing the signal amplitude to some degree. This paper also shows a quite simple method for measuring the scattering coefficient in weakly absorbing materials using a PZT transducer, which can be used to determine the concentration of highly scattering compositions in some cases.
机译：在本文中，由脉冲二极管激光器激发的光声技术被用于光学吸收和散射液体的研究。本文讨论了光散射对光声源和信号的影响。在经验部分，将不同量的牛奶和碳粉添加到水中，以控制所得液体的吸收系数和散射系数。结果表明，散射增加了光声信号的持续时间，同时在一定程度上降低了信号幅度。本文还显示了一种非常简单的方法，该方法使用PZT换能器测量弱吸收材料中的散射系数，在某些情况下可用于确定高散射成分的浓度。

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