Popescu G, Dogariu A
Opt Lett. 1999 Apr 1;24(7):442-4. doi: 10.1364/ol.24.000442.
We propose optical path-length spectroscopy as a new approach to obtaining information from media that exhibit multiple light scattering. By using a backscattering technique based on low-coherence interferometry, we are able to determine the optical path-length distribution for light reflected from a random medium and to infer the value of the transport mean free path. We illustrate how a diffusion approximation model leads to a satisfactory description of depth-resolved profiles of the backscattered intensity and discuss potential applications of this technique.
我们提出光程长度光谱法作为一种从呈现多次光散射的介质中获取信息的新方法。通过使用基于低相干干涉测量的背散射技术，我们能够确定从随机介质反射的光的光程长度分布，并推断出输运平均自由程的值。我们说明了扩散近似模型如何能令人满意地描述背散射强度的深度分辨剖面，并讨论了该技术的潜在应用。
