Spatial shift of spatially modulated light projected on turbid media.

Spatial shift of spatially modulated light projected on turbid media.
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DOI:
10.1364/josaa.25.002833
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发表时间:
2008-11
影响因子:
1.9
通讯作者:
Tromberg, Bruce J.
Tromberg, Bruce J.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Bassi, Andrea;Cuccia, David J.;Durkin, Anthony J.;Tromberg, Bruce J.

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这项工作扩展了调制成像,最近开发的技术的基础上的结构光的投影上的混浊介质,能够测量高散射介质的光学特性和执行断层扫描。我们观察到,结构光斜投影在混浊介质中经历了空间移动在传播过程中。提出了一种测量正弦条纹在混浊介质中的空间相移的方法,并提出了一个由漫射近似导出的模型来描述光的传播。通过对液体幻影进行测量的实验验证。
This work extends modulated imaging, a recently developed technique based on the projection of structured light on a turbid medium that is able to measure optical properties of the high-scattering medium and perform tomography. We observe that structured light obliquely projected on a turbid medium undergoes a spatial shift during propagation. We propose a method to measure the spatial phase shift of a sinusoidal fringe pattern projected in a turbid medium, and we present a model derived from the diffusion approximation to describe the light propagation. Experimental validation by measurements performed on liquid phantoms is presented.
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