Digital holographic fractal speckle
Digital holographic fractal speckle
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DOI：
10.1088/2040-8978/15/3/035704
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发表时间：
2013-03
影响因子：
2.1
通讯作者：
H. Funamizu;J. Uozumi;Y. Aizu
中科院分区：
文献类型：
--
作者：
H. Funamizu;J. Uozumi;Y. Aizu
以往的研究表明，在成像系统中使用强度透过率服从负幂规律的空间光调制器作为光瞳滤光器，可以在像平面上产生分数维散斑。然而，这种方法的缺点是，由于光瞳滤光器给出的总透过率较低，因此这种散斑的强度分布非常低。为了克服这一缺点，我们在这里提出了使用数字全息术来产生分形斑点。简要说明了理论背景，并给出了实验结果。
It has been shown in previous studies that fractal speckles can be produced in an image plane by using as a pupil filter in the imaging system a spatial light modulator with an intensity transmittance obeying a negative power-law. However, this method has a disadvantage in that the intensity distributions of such speckles are very low due to the pupil filter giving a lower total transmittance. To overcome this disadvantage, we propose here the use of digital holography to generate fractal speckles. The theoretical background is explained briefly, and experimental results are shown.