散射系数的直接测量。
Direct measurement of the scattering coefficient.
作者信息
Hohmann Martin, Lengenfelder Benjamin, Muhr Daniel, Späth Moritz, Hauptkorn Maximilian, Klämpfl Florian, Schmidt Michael
机构信息
Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Germany.
Erlangen Graduate School in Advanced Optical Technologies (SAOT), Paul-Gordan-Straße 6, 91052 Erlangen, Germany.
出版信息
Biomed Opt Express. 2020 Dec 14;12(1):320-335. doi: 10.1364/BOE.410248. eCollection 2021 Jan 1.
In general, the measurement of the main three optical properties ( , and ) in turbid media requires a very precise measurement of the total transmission (TT), the total reflection (TR) and the collimated transmission (CT). Furthermore, an inverse algorithm such as inverse adding doubling or inverse Monte-Carlo-simulations is required for the reconstruction of the optical properties. Despite many available methods, the error free measurement of the scattering coefficient or the g-factor still remains challenging. In this study, we present a way to directly calculate the scattering coefficient from the total and collimated transmission. To allow this, it can be shown that is proportional to for a wide range of optical properties if the sample is thick enough. Moreover, a set-up is developed and validated to measure the collimated transmission precisely.
一般来说，测量浑浊介质中的主要三种光学特性（ 、 和 ）需要非常精确地测量总透射率（TT）、总反射率（TR）和准直透射率（CT）。此外，需要诸如逆相加加倍或逆蒙特卡罗模拟等逆算法来重建光学特性。尽管有许多可用方法，但无误差测量散射系数或g因子仍然具有挑战性。在本研究中，我们提出了一种从总透射率和准直透射率直接计算散射系数的方法。为此，可以证明，如果样品足够厚，对于广泛的光学特性， 与 成正比。此外，还开发并验证了一种用于精确测量准直透射率的装置。
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