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MODE-SELECTIVE DYNAMIC LIGHT SCATTERING - THEORY VERSUS EXPERIMENTAL REALIZATION

机译:模式选择动态光散射-理论与实验实现

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We present a quantitative experimental comparison of fiber-based, single- and few-mode dynamic light scattering with the classical pinhole-detection optics. The recently presented theory of mode-selective dynamic light scattering [Appl. Opt. 32, 2860 (1993)] predicts a collection efficiency and a signal-to-baseline ratio superior to that of a classical pinhole setup. These predictions are confirmed by our experiments. Using single-mode optical fibers with different cutoff wavelengths and commercially available mechanical components, we have constructed a mode-selective detection optics in a simple and compact dynamic light-scattering spectrometer that permits an optimal compromise between signal intensity and dynamical resolution. [References: 10]
机译:我们提出了基于光纤的,单模和少模动态光散射与经典针孔检测光学器件的定量实验比较。最近提出的模式选择性动态光散射理论[Appl。选择。 32,2860(1993)]预测了收集效率和信噪比均优于传统的针孔设置。我们的实验证实了这些预测。我们使用具有不同截止波长的单模光纤和市售的机械组件,在简单而紧凑的动态光散射光谱仪中构造了模式选择检测光学器件,从而可以在信号强度和动态分辨率之间实现最佳折衷。 [参考:10]

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