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Super-reflection of light from a random amplifying medium with disorder in the complex refractive index : Statistics of fluctuations

机译:来自随机放大介质的光的超反射   在复折射率:波动的统计

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摘要

The probability distribution of the reflection coefficient for lightreflected from a one-dimensional random amplifying medium with {\itcross-correlated} spatial disorder in the real and the imaginary parts of therefractive index is derived using the method of invariant imbedding. Thestatistics of fluctuations have been obtained for both the correlated telegraphnoise and the Gaussian white-noise models for the disorder. In both cases, anenhanced backscattering (super-reflection with reflection coefficient greaterthan unity) results because of coherent feedback due to Anderson localizationand coherent amplification in the medium. The results show that the effect ofrandomness in the imaginary part of the refractive index on localization andsuper-reflection is qualitatively different.
机译:利用不变嵌入的方法,推导了从一维随机相关的一维随机放大介质反射的光的反射系数的概率分布,其中,该空间无序具有折射率的实部和虚部。对于该疾病,相关的电报噪声和高斯白噪声模型均获得了波动的统计数据。在这两种情况下,由于安德森定位和介质中的相干放大引起的相干反馈,导致了增强的反向散射(反射系数大于1的超反射)。结果表明,折射率虚部的随机性对定域和超反射的影响在质量上是不同的。

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