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各向异性高斯-谢尔模型光束的Z扫描实验

DOI: 10.11830/ISSN.1000-5013.2009.02.0135

Keywords: 各向异性, 高斯-谢尔模型光束, 部分相干光, Z扫描, 相干度

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Abstract:

根据各向异性高斯-谢尔模型光束在空间的传输公式,推导出小孔处的光强表达式,并依据此公式对实验进行数值模拟.结果表明,x和y方向的相干度变化,以及光束偏心率的大小都直接影响着归一化曲线的峰-谷间差值ΔTp-v的大小.在一定偏心率下,ΔTp-v随着相干度的增大而增大; 而在相同相干度下,偏心率的增大导致会ΔTp-v的减小.

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