Complex Photonic Systems, Faculty of Science and Technology, and MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
Phys Rev Lett. 2010 Jul 2;105(1):013904. doi: 10.1103/PhysRevLett.105.013904.
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 random photonic media by measuring emission rates of a large number of individual fluorescent nanospheres. The emission rates are observed to fluctuate spatially, and the variance of the fluctuations increases with the scattering strength. The measured variance of the emission rates agrees well with a model that takes into account the effect of the nearest scatterer only.
我们通过测量大量单个荧光纳米球的发射率来实验研究三维随机光子介质内部局域态密度（LDOS）的空间波动。发射率在随机光子介质内的许多位置上进行测量，观察到发射率的空间波动，并且波动的方差随散射强度增加而增加。测量的发射率方差与仅考虑最近散射体影响的模型吻合得很好。
