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中文摘要：
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．
英文摘要：
Based on the unified theory of coherence and polarization, Electromagnetic Gaussian Schell-model beam was taken as an example to study the transmission properties of random electromagnetic beams diffracted by Fresnel zone plates, the influence of correlation length, the degree of polarization of incident light, and the max radius number of zone plates on the light intensity and the degree of polarization. It is shown that the coherent property and the max radius num- ber of zone plates will influence the focusing intensity, that the position of extremum of degree of polarization is near by the focus and the second focus, and it varies with the change of the max radius number of zone plates.
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Spectral and polarization properties of stochastic electromagnetic beams propagating in gain or abso
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