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随机电磁光束经菲涅耳波带片衍射后的传输特性

DOI: 10.11830/ISSN.1000-5013.2011.06.0618

Keywords: 菲涅尔波带片, 偏振, 随机电磁光束, 衍射, 聚焦光强

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Abstract:

基于相干偏振统一理论,以电磁高斯-谢尔模型光束为例,研究随机电磁光束经菲涅耳波带片衍射后的传输特性,以及入射光的相干长度、偏振度和菲涅耳波带片的最大半径数对光强和偏振度的影响.研究表明:光束的相干特性及菲涅耳波带片的最大半径数对聚焦光强会产生影响; 偏振度极值的位置在焦点及次焦点附近,并且偏振度极值的位置随波带片最大半径数的变化而变化.

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