The autocorrelation of speckles in deep Fresnel diffraction region and characterizations of random self-affine fractal surfaces

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	The autocorrelation of speckles in deep Fresnel diffraction region and characterizations of random self-affine fractal surfaces
	Teng SY ; Cheng CF ; Liu M ; Gui WL ; Xu ZZ(徐至展)
刊名	chin. phys.
	2005
卷号	14 期号:10 页码:1990
关键词	speckles deep Fresnel diffraction random self-affine fractal surface
ISSN号	1009-1963
中文摘要	this paper studies the correlation properties of the speckles in the deep fresnel diffraction region produced by the scattering of rough self-affine fractal surfaces. the autocorrelation function of the speckle intensities is formulated by the combination of the light scattering theory of kirchhoff approximation and the principles of speckle statistics. we propose a method for extracting the three surface parameters, i.e. the roughness w, the lateral correlation length xi and the roughness exponent alpha, from the autocorrelation functions of speckles. this method is verified by simulating the speckle intensities and calculating the speckle autocorrelation function. we also find the phenomenon that for rough surfaces with alpha = 1, the structure of the speckles resembles that of the surface heights, which results from the effect of the peak and the valley parts of the surface, acting as micro-lenses converging and diverging the light waves.
收录类别	EI
语种	英语
WOS记录号	WOS:000232383600012
公开日期	2009-09-18
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/874]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
推荐引用方式 GB/T 7714	Teng SY,Cheng CF,Liu M,et al. The autocorrelation of speckles in deep Fresnel diffraction region and characterizations of random self-affine fractal surfaces[J]. chin. phys.,2005,14(10):1990, 1995.
APA	Teng SY,Cheng CF,Liu M,Gui WL,&徐至展.(2005).The autocorrelation of speckles in deep Fresnel diffraction region and characterizations of random self-affine fractal surfaces.chin. phys.,14(10),1990.
MLA	Teng SY,et al."The autocorrelation of speckles in deep Fresnel diffraction region and characterizations of random self-affine fractal surfaces".chin. phys. 14.10(2005):1990.