Strongly scattering media exhibit weak-localization enhancement factors below two in de helicity preserving channel. An explanation in terms of loop-type light paths is given.

Optical Society of America
R.R. Alfano

van Albada, M. P., Wiersma, D. S., & Lagendijk, A. (1994). Experimental evidence for loop-type photon trajectories in random media with strong disorder. In R. R. Alfano (Ed.), OSA Proceedings on Advances in Optical Imaging and Photon Migration ; vol. 21 (pp. 25–28).