飞秒
波长
衰减系数
散射
衰减
材料科学
光学
米氏散射
激光器
吸收(声学)
扩散
光散射
强度(物理)
肝组织
分子物理学
光电子学
物理
医学
内科学
热力学
作者
Hafeez Ullah,M. Atif,S. Firdous,Malik Sajjad Mehmood,Manzoor Ikram,Cristina Kurachi,Clóvis Grecco,Gustavo Nicolodelli,V. S. Bagnato
标识
DOI:10.1002/lapl.201010079
摘要
In this study we investigated the light distribution under femtosecond laser illumination and its correlation with the collected diffuse scattering at the surface of ex-vivo rat skin and liver. The reduced scattering coefficients μ's for liver and skin due to different scatterers have been determined with Mie-scattering theory for each wavelength (800, 630, and 490 nm). Absorption coefficients μa were determined by diffusion approximation equation in correlation with measured diffused reflectance experimentally for each wavelength (800, 630, and 490 nm). The total attenuation coefficient for each wavelength and type of tissue were determined by linearly fitting the log based normalized intensity. Both tissues are strongly scattering thick tissues. Our results may be relevant when considering the use of femtosecond laser illumination as an optical diagnostic tool.
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