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部分相干光光束并合的光束传输变换特性 被引量:3

Beam Combination Characteristics of Partially Coherent Beams
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摘要 运用维格纳(Wigner)分布函数(WDF)研究了高斯-谢尔模型(GSM)描述的部分相干光-光束并合的光束传输特性。推导出了并合光束的光束传输因子(M^2因子)、峭度因子(K因子)以及光强分布的解析表达式。研究表明,并合光束的M^2因子、K因子、光强分布和束宽依赖于总的空间相干度α,间距x_d,束腰宽度ω_0和GSM子光束数日N,如果子光束具有较大的α值,并合光束在远场更能达到较高的峰值光强和较窄的束宽。 The beam combination characteristics of partially coherent beams, which are aligned along one dimension, are studied by use of Wigner distribution function. The formulae of intensity profiles, beam propagation factor (M^2) and kurtosis parameter (K) are derived. The analysis shows that the intensity profiles, beam width, beam propagation factor (M^2) and kurtosis parameter (K) are dependent on the spatial coherent length, propagation distance, separation and numbers of the beamlets.
出处 《中国激光》 EI CAS CSCD 北大核心 2009年第9期2337-2340,共4页 Chinese Journal of Lasers
基金 四川省青年科技基金重点科研项目(04ZQ026-030) 四川省教育厅重点科研课题(2003A065)资助课题
关键词 相干光学 高斯-谢尔模型 WIGNER分布函数 光束传输因子(M^2因子) 峭度因子(K因子) coherence optics Gaussian Schell-model Wigner distribution function beam propagation factor (M^2) kurtosis parameter (K)
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参考文献21

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同被引文献39

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