Path-length distribution and path-length-resolved Doppler measurements of multiply scattered photons by use of low-coherence interferometry.
Path-length distribution and path-length-resolved Doppler measurements of multiply scattered photons by use of low-coherence interferometry.
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使用低相干干涉测量法对多重散射光子进行路径长度分布和路径长度分辨多普勒测量。
DOI：
10.1364/ol.26.001492
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发表时间：
2001
期刊：
影响因子：
3.6
通讯作者：
F. D. de Mul
中科院分区：
文献类型：
--
作者：
A. Petoukhova;W. Steenbergen;F. D. de Mul
我们报告的第一个结果的测量低相干多普勒干涉的路径长度分布的光子在一个高度混浊的介质中进行多次散射。我们使用一个马赫-曾德尔干涉仪与多模梯度折射率光纤和超辐射发光二极管作为光源。的路径长度分布是通过记录的外差波动，所产生的布朗运动的粒子在Intraperoid悬浮液作为一个函数的光程长度。实验的路径长度分布是在很好的协议与Monte Carlo模拟的预测。在外差频谱中，观察到平均多普勒频率随路径长度的增加。
We report first results of measurements by low-coherence Doppler interferometry of the path-length distribution of photons undergoing multiple scattering in a highly turbid medium. We use a Mach-Zehnder interferometer with multimode graded-index fibers and a superluminescent diode as the light source. The path-length distribution is obtained by recording of the heterodyne fluctuations that arise from the Brownian motion of particles in an Intralipid suspension as a function of the optical path length. The experimental path-length distribution is in good agreement with predictions of Monte Carlo simulations. In the heterodyne spectrum, an increase of the mean Doppler frequency with path length is observed.