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首页> 外文期刊>Applied optics >Light scattering by ensemble of nonabsorbing correlated two-layered particles: specific feature for spectral dependence of extinction coefficient
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Light scattering by ensemble of nonabsorbing correlated two-layered particles: specific feature for spectral dependence of extinction coefficient

机译：不吸收的相关两层粒子的集合光散射：消光系数的光谱依赖性的特定特征

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摘要

Scattering of light by an ensemble of nonabsorbing spherical concentric two-layered particles is considered. It has been shown that exponent of the power function describing the wavelength dependence of the extinction coefficient of the medium with subwavelength-sized particles can exceed considerably the value of 4, which takes place for the Rayleigh scattering. Spatial correlation of particles enhances this "anomalous" dependence on the wavelength. Bleaching and darkening effects can be implemented. In the first case transmittance increases, while in the second case transmittance decreases with increased volume concentration. These effects can be used to get a sharp spectral dependence of transmittance. Comparison with the data for spatially correlated homogeneous particles is carried out.
机译：考虑了由不吸收的球形同心两层颗粒的整体引起的光散射。已经表明，描述具有亚波长尺寸的颗粒的介质的消光系数的波长依赖性的幂函数的指数可以大大超过4的值，这是瑞利散射所发生的。粒子的空间相关性增强了这种对波长的“异常”依赖性。可以实现漂白和变暗效果。在第一种情况下，透射率增加，而在第二种情况下，透射率随着体积浓度的增加而降低。这些效应可用于获得透射率的明显光谱依赖性。与空间相关的均质颗粒的数据进行比较。

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