Speckle contrast for superposed speckle patterns created by rotating the orientation of laser polarization

Zhaomin Tong; Xuyuan Chen

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Speckle contrast for superposed speckle patterns created by rotating the orientation of laser polarization

机译：通过旋转激光偏振方向创建的叠加斑点图案的斑点对比度

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For a rough diffuser that fully depolarizes a linearly polarized laser, the speckle contrast of a fully developed speckle image can be reduced from 1 to 0.5 by polarization diversity. This reduction is achieved by rotating an x-polarized laser to the y-polarized orientation to form four independent speckle patterns with equal intensities during the detector exposure time. For the case of arbitrary rotation of the polarization, we derived a generalized speckle contrast formula for the superposed speckle patterns. This formula completes the theory of speckle contrast for the sum of correlated speckle intensities as it relates to polarization diversity.

机译：对于使线性偏振激光完全消偏振的粗糙漫射体，可以通过偏振分集将完全显影的斑点图像的斑点对比度从1降低到0.5。通过在探测器曝光期间将x偏振激光旋转到y偏振方向以形成四个具有相同强度的独立散斑图案，可以实现这种减小。对于偏振的任意旋转的情况，我们推导了叠加斑点图案的广义斑点对比度公式。该公式完善了相关的散斑强度之和的散斑对比度理论，因为它与偏振分集有关。

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《Journal of the Optical Society of America, A. Optics, image science, and vision》 |2012年第10期|共6页
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Zhaomin Tong; Xuyuan Chen;
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正文语种 eng
中图分类光学;
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1. Speckle contrast for superposed speckle patterns created by rotating the orientation of laser polarization [J] . Zhaomin Tong, Xuyuan Chen Journal of the Optical Society of America, A. Optics, image science, and vision . 2012,第10期

机译：通过旋转激光偏振方向创建的叠加斑点图案的斑点对比度
2. PATHOLOGICAL PATTERNS OF SPINAL CORD BLOOD FLOW AFTER INJURY VISUALISED WITH LASER SPECKLE CONTRAST IMAGING [J] . Gallagher Mathew J., Hogg Florence R., Zoumprouli Argy, Journal of neurotrauma . 2018,第16期

机译：用激光散斑对比度成像可视化后脊髓血流的病理模式
3. PATHOLOGICAL PATTERNS OF SPINAL CORD BLOOD FLOW AFTER INJURY VISUALISED WITH LASER SPECKLE CONTRAST IMAGING [J] . Gallagher Mathew J., Hogg Florence R., Zoumprouli Argy, Journal of neurotrauma . 2018,第16期

机译：用激光散斑对比度成像可视化后脊髓血流的病理模式
4. Laser speckle contrast analysis (LASCA): a technique for measuring capillary blood flow using the first order statistics of laser speckle patterns [C] . Richards, G.J., Briers, . 1997

机译：激光斑点对比分析（LASCA）：一种使用激光斑点图案的一阶统计量测量毛细血管血流量的技术
5. Statistical image recovery from laser speckle patterns with polarization diversity. [D] . Dixon, Donald B. 2010

机译：从具有偏振分集的激光散斑图案进行统计图像恢复。
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机译：具有偏振分集的激光散斑图的统计图像恢复

Speckle contrast for superposed speckle patterns created by rotating the orientation of laser polarization

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