title: Analysis of reflectance curve of turbid media and determination of the non-surface complex refractive index.
abstract: Based on the theory of Goos-Hänchen shift and its continuity near the critical angle, we introduce the concept of penetration depth below the critical angle, and obtain the general formula of reflectance using the gradient complex refractive index multilayered model. Compared with the fitting curve with Fresnel's Formula, our calculated results are more consistent with experimental results of Intralipid solution and the suspension of rutile TiO(2) powder. Combining the change of penetration depth near the critical angle with our model, we also reveal the essence of a simple method used to obtain the non-surface complex refractive index of turbid media.
authors.forename: Jiwen
authors.initials: J
authors.lastname: Sun
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.forename: Jianchun
authors.initials: J
authors.lastname: Mei
authors.forename: Wenyuan
authors.initials: W
authors.lastname: Zhou
authors.forename: Chunping
authors.initials: C
authors.lastname: Zhang
authors.forename: Jianguo
authors.initials: J
authors.lastname: Tian