| 菲涅耳深区的散斑光强概率密度 |
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| 引用本文： | 陈小艺,滕树云,宋洪胜,程传福. 菲涅耳深区的散斑光强概率密度[J]. 山东师范大学学报(自然科学版), 2006, 21(2): 48-50 |
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| 作者姓名： | 陈小艺 滕树云 宋洪胜 程传福 |
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| 作者单位： | 山东师范大学物理与电子科学学院,250014,济南;山东建筑工程学院,250014,济南 |
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| 摘 要： | 利用基尔霍夫衍射理论分析了菲涅耳深区内的散斑场，得到了菲涅耳深区散斑光强的一般表达式．通过数值计算研究了菲涅耳深区的散斑光强分布，并由所得的光强数据统计计算了菲涅耳深区散斑光强概率密度，分析讨论了菲涅耳深区散斑光强概率密度随散射距离的演化规律．
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| 关 键 词： | 菲涅耳深区 随机表面 散斑光强概率密度 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2005-12-28 |
SPECKLE INTENSITY PROBABILITY DENSITY IN DEEP FRESNEL DIFFRACTION REGION |
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| Chen Xiaoyi,Teng Shuyun,Song Hongsheng,Cheng Chuanfu. SPECKLE INTENSITY PROBABILITY DENSITY IN DEEP FRESNEL DIFFRACTION REGION[J]. Journal of Shandong Normal University(Natural Science), 2006, 21(2): 48-50 |
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| Authors: | Chen Xiaoyi Teng Shuyun Song Hongsheng Cheng Chuanfu |
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| Affiliation: | 1. College of Physics and Electronics, Shandong Normal University,250014, Jinan, China; 2. Shandong University of Architecture and Engineering,250014,Jinan, China |
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| Abstract: | Basing on the light diffracting theory of Kirchhoff, we obtain the expression for the intensity of speckles in deep Fresnel diffraction region. We generate numerically the random self- affine fractal surfaces and calculate the speckle intensity scattered by these scattering surfaces. Basing on the intensity data, we obtain the distribution of the speckle probability density in deep Fresnel diffraction region by the histogram statistics and discuss in detail the variations of the speckle intensity probability density with the distance from the random surface. |
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| Keywords: | deep Fresnel diffraction region random surface speckle intensity probability density |
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