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arXiv 1002.3186physics.opticscond-mat.dis-nnquant-ph
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随机介质中局域态密度空间涨落的观测

Observation of Spatial Fluctuations of the Local Density of States in Random Media

M. D. Birowosuto, S. E. Skipetrov, W. L. Vos, A. P. Mosk

摘要:

实验研究了三维随机光子介质中局域态密度的空间涨落。通过测量大量单个荧光纳米球的发射率,在随机光子介质内的许多位置探测LDOS。观察到的排放率波动空间。我们分析了这些波动的方差与不同的散射强度的样品。测量的排放率的方差同意与模型,考虑到最近的散射体的影响。

英文摘要:

We experimentally study spatial fluctuations of the local density of states (LDOS) inside three-dimensional random photonic media. The LDOS is probed at many positions inside the random photonic media by measuring emission rates of a large number of individual fluorescent nanospheres. The emission rates are observed to fluctuate spatially. We analyze the variance of these fluctuations for samples with different scattering strengths. The measured variance of the emission rates agrees well with a model that takes into account the effect of the nearest scatterer only.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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