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Statistics of dynamic polarization speckle generated from a moving rough-surfaced retardation plate

机译:动态偏振斑点的统计从移动粗糙表面延迟板产生的动态偏振斑点

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Laser speckle has received extensive studies in its basic properties and wide applications. In the majority of research onspeckle phenomena, these random optical fields have been treated as scalar optical fields, and the main interest has beenin the statistical properties together with applications of the intensity distribution of the speckle patterns. In recent years,increasing attention has been paid to the statistical properties of random electric vector fields referred to as polarizationspeckle with spatially varying polarization state. Statistical phenomena of random electric vector fields with their closerelevance to the theories of speckles, polarization and coherence theory have come to attract emerging interest due to theirimportance in a variety of areas for practical applications such as biomedical optics, remote sensing, astronomicalobservation and optical metrology.In this paper, we investigate the dynamic polarization speckle generated by a moving rough-surfaced retardation plate andpresent an exact analytical expression for the space-time lagged correlation for the stochastic fields within the frameworkof ABCD matrix theory (Canonical Transforms). General expressions are derived for the spot size, the mean polarizationspeckle size, the temporal coherence length, and the peak shift of the temporal correlation. Some interesting phenomenaassociated with dynamic polarization speckle have been predicted including polarization speckle boiling and polarizationspeckle translation. A general description of these phenomena has been given for arbitrary complex-valued ABCD opticalsystems.
机译:激光斑点在其基本性质和广泛应用中获得了广泛的研究。在大多数研究中散斑现象,这些随机光学字段已被视为标量光学字段,主要兴趣是在统计属性中,与斑点图案的强度分布的应用一起。最近几年,随着随机电矢量字段的统计特性增加了提高注意力具有空间变化的偏振状态的散斑。随机电动矢量字段的统计现象及其关闭与斑点,极化和连贯理论理论的相关性,由于他们的在各种领域的实际应用等重要性,如生物医学光学,遥感,天文学观察和光学计量。在本文中,我们研究了移动粗糙型延迟板和移动粗糙延迟板产生的动态偏振斑点提出了对框架内随机区域的时空滞后相关性的精确分析表达式ABCD矩阵理论(规范变换)。一般表达式用于光斑尺寸,平均极化斑点尺寸,时间相干长度和时间相关的峰值偏移。一些有趣的现象已经预测了与动态偏振斑点相关的,包括偏振斑点沸腾和极化斑点翻译。已经给出了这些现象的一般描述,用于任意复合值的ABCD光学系统。

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