Holographic time-resolved particle tracking by means of three-dimensional volumetric deconvolution
Holographic time-resolved particle tracking by means of three-dimensional volumetric deconvolution
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DOI：
10.1364/oe.22.020994
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发表时间：
2014-08-25
期刊：
影响因子：
3.8
通讯作者：
Fink, Hans-Werner
中科院分区：
文献类型：
--
作者：
Latychevskaia, Tatiana;Fink, Hans-Werner
全息粒子图像测速技术允许通过全息术在时间和空间上跟踪粒子轨迹。然而，该技术的缺点是，在从全息图重建的三维粒子分布中，由于来自相邻粒子的叠加的离焦信号，单个粒子几乎不能被分辨。我们在这里展示了一个三维体积反卷积应用于重建的波前，其结果在解决所有粒子同时在三维空间。此外，我们应用三维体积去卷积重建的时间依赖序列的全息图的合奏聚苯乙烯球在水中移动。从每个全息图中，我们同时解决了所有粒子的合奏在三维和全息图的序列中，我们获得的时间分辨轨迹的单个聚苯乙烯球。(C)2014年美国光学学会
Holographic particle image velocimetry allows tracking particle trajectories in time and space by means of holography. However, the drawback of the technique is that in the three-dimensional particle distribution reconstructed from a hologram, the individual particles can hardly be resolved due to the superimposed out-of-focus signal from neighboring particles. We demonstrate here a three-dimensional volumetric deconvolution applied to the reconstructed wavefront which results in resolving all particles simultaneously in three-dimensions. Moreover, we apply the three-dimensional volumetric deconvolution to reconstructions of a time-dependent sequence of holograms of an ensemble of polystyrene spheres moving in water. From each hologram we simultaneously resolve all particles in the ensemble in three dimensions and from the sequence of holograms we obtain the time-resolved trajectories of individual polystyrene spheres. (C) 2014 Optical Society of America