| 各向异性高斯-谢尔模型光束的Z扫描实验 |
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| 引用本文： | 亓红群,刘永欣,蒲继雄.各向异性高斯-谢尔模型光束的Z扫描实验[J].华侨大学学报(自然科学版),2009,30(2). |
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| 作者姓名： | 亓红群 刘永欣 蒲继雄 |
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| 作者单位： | 华侨大学,信息科学与工程学院,福建,泉州,362021 |
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| 基金项目： | 国家自然科学基金，福建省科技计划重点项目 |
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| 摘 要： | 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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| 关 键 词： | 各向异性 高斯-谢尔模型光束 部分相干光 Z扫描 相干度 |
The Z-Scan Experiments of Anisotropic Gaussian Schell-Model Beams |
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| QI Hong-qun,LIU Yong-xin,PU Ji-xiong.The Z-Scan Experiments of Anisotropic Gaussian Schell-Model Beams[J].Journal of Huaqiao University(Natural Science),2009,30(2). |
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| Authors: | QI Hong-qun LIU Yong-xin PU Ji-xiong |
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| Institution: | College of Information Science and Engineering;Huaqiao University;Quanzhou 362021;China |
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| Abstract: | Based on the transmission expression of anisotropic Gaussian Schell-model beam in free space,the expression of the optical intensity at the hole is derived,and the experimental results are also numerical simulated.The results show that the changes of spatial degree of coherence in x and y oriention and the ellipticity influence the tolerance between peak and valley.When the ellipticity is a constant,the tolerance is getting bigger with the increment of spatial degree of coherence.With a definite value of sp... |
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| Keywords: | anisotropic Gaussian Schell-model beams partially coherent beam Z-scan degree of coherence |
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