Moscow Engineering Physics Institute (National Research Nuclear University), Moscow, Russia.
Opt Lett. 2012 Mar 15;37(6):1026-8. doi: 10.1364/OL.37.001026.
We present a theoretical basis for calculation of the angular profile of the coherent backscattering intensity under low spatial coherence illumination. We take into account two contributions to the intensity, namely, the diffusion contribution and the contribution from the waves that experience the small-angle multiple scattering before and after single deflection in the backward direction. The latter contribution describes transport of light at subdiffusion length scales and is responsible for the wings of the backscattering angular profile. Our results are in good agreement with data of Monte-Carlo simulations and experiment.
我们提出了一种在低空间相干照明下计算相干背散射强度角分布的理论基础。我们考虑了强度的两个贡献，即扩散贡献和经历小角度多次散射的波的贡献，这些波在向后单偏折前后经历了小角度多次散射。后一个贡献描述了亚扩散长度尺度的光输运，并且是背散射角分布的翅膀的原因。我们的结果与蒙特卡罗模拟和实验数据非常吻合。
