矢量场完全相干与偏振的内在关联  

Relation Between Complete Coherence and Polarization of Vector Fields

作　　者：陈晶晶[1] 陈斐楠[2] 李伽[3] 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009 [2]中国科学院合肥物质科学研究院应用技术研究所,安徽合肥230031 [3]迈阿密大学文理学院物理系,佛罗里达迈阿密33146

出　　处：《光学学报》2016年第10期468-474,共7页Acta Optica Sinica

基　　金：国家自然科学基金(11404086;11504383);中央高校基本科研业务费专项资金资助(J2014HGBZ0170;2014HGQC0009);安徽省自然科学基金(1508085QA23)

摘　　要：基于统计相似理论,利用完全相干所隐含的两点处光场分量间的关系,分别对Wolf和Setl定义下完全相干所对应的偏振特性进行研究。分析完全相干所包含的光场偏振度特性以及偏振部分的偏振态分布特征,并找出光场分量间的线性特性与椭圆率和方位角之间的关联形式,最后进行了模拟仿真实验。结果表明,基于Wolf定义的完全相干,两点处光场的偏振度可以是任意的,但是这两点处的偏振度以及交叉偏振度绝对相等,且两点光场完全偏振部分的偏振态也完全一致;基于Setl定义的完全相干,对应着两点处的光场均是完全偏振的,但是这两点光场的偏振态并不一致,而且它们的椭圆率以及方位角之间并无特定联系。Based on statistical similarity theory, the corresponding polarization properties of complete coherence defined by Wolf and Setala are studied respectively by using the relationship of light field component of two points hidden by complete coherence. The polarization degree characteristic of light field included by complete coherence and the polarization state distribution characteristic of the polarized portion are analyzed. Then the analytic expressions of the linear characteristic of light field component, ellipticity and azimuth angle are derived. The simulation experiment are carried out at last. Results show that based on the complete coherence defined by Wolf, the polarization degree of the random field at the two points is an arbitrary value, but the value and the degree of the cross polarization are exactly the same. Based on the complete coherence introduced by Setala, the random field at the two points is completely polarized, but the polarization state does not exhibit the same character, and there is no association between ellipticity and azimuth angle.

关 键 词：物理光学 相干 偏振 统计相似 矢量场 

分 类 号：O436[机械工程—光学工程]