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    首頁> 外文會議>Unmanned/Unattended Sensors and Sensor Networks II >Degrees of coherence of partially polarized light: invariance and information properties
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    Degrees of coherence of partially polarized light: invariance and information properties

    機譯:部分偏振光的相干度:不變性和信息特性

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    摘要

    We address the problem of defining degrees of coherence for partially polarized Gaussian light. Some previously published approaches provide efficient solutions to this problem, but we will show on simple examples that they do not clearly separate partial polarization and partial coherence effects. We thus introduce intrinsic degrees of coherence, which characterize partial coherence independently of the choice of coordinate systems and of the partial polarization state of each field. The larger of these degrees has a clear physical meaning since it corresponds to the largest scalar degree of coherence that can be obtained after propagating the light waves through polarization modulators and perfect polarizers. Another interesting physical interpretation is obtained by relating the intrinsic degrees of coherence to the Shannon entropy, which is a classic measure of the "disorder" of a physical phenomenon.
    機譯:我們解決了為部分偏振的高斯光定義相干度的問題。某些以前發布的方法為解決此問題提供了有效的解決方案,但我們將在簡單的示例上顯示它們不能清楚地區分部分極化和部分相干效應。因此,我們引入了內在的相干度,其固有的部分相干性獨立于坐標系的選擇以及每個場的部分偏振態。這些程度中的較大者具有明確的物理意義,因為它對應于在通過偏振調制器和理想偏振器傳播光波之后可獲得的最大標量相干度。通過將固有的相干度與香農熵相關聯,可以獲得另一種有趣的物理解釋,香農熵是對物理現象“無序”的經典度量。

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