Photon diffusion near the point-of-entry in anisotropically scattering turbid media.

Photon diffusion near the point-of-entry in anisotropically scattering turbid media.
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DOI:
10.1038/ncomms1599
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发表时间:
2011-12-13
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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从天文学到细胞生物学,几十年来,光在混浊介质中的传播方式一直是至关重要的。然而,在混浊介质中,光在入口点(PoE)附近的传播直到现在还没有被解析地描述过。在这里,我们报告了一种简单而准确的方法,它克服了辐射传输中长期存在的、尚未解决的问题。我们的理论适当地处理了各向异性光子散射事件,并考虑了位相函数的具体形式。结果表明,对于任意的位相函数,我们的方法都能正确地预测PoE附近光的空间相关漫反射比。我们证明,对于几种常用的相函数,该理论与实验结果和蒙特卡罗模拟结果都符合得很好。
From astronomy to cell biology, the manner in which light propagates in turbid media has been of central importance for many decades. However, light propagation near the point-of-entry (POE) in turbid media has never been analytically described, until now. Here we report a straightforward and accurate method that overcomes this longstanding, unsolved problem in radiative transport. Our theory properly treats anisotropic photon scattering events and takes the specific form of the phase function into account. As a result, our method correctly predicts the spatially dependent diffuse reflectance of light near the POE for any arbitrary phase function. We demonstrate that the theory is in excellent agreement with both experimental results and Monte Carlo simulations for several commonly used phase functions.
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发表时间: 1973-01-01
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