Clipped speckle autocorrelation metric for spot size characterization of focused beam on a diffuse target

	Clipped speckle autocorrelation metric for spot size characterization of focused beam on a diffuse target
	Li, Y. Y.; J. Guo; L. S. Liu; T. F. Wang; W. Tang and Z. H. Jiang
	2015
发表期刊	Optics Express
卷号	23 期号:6 页码:7424-7441
摘要	The clipped speckle autocorrelation (CSA) metric is proposed for estimating the laser beam energy concentration on a remote diffuse target in a laser beam projection system with feedback information. Using the second order statistics of the intensity distribution of the fully developed speckle and the relation of the autocorrelation functions for the clipped and unclipped speckles, we present the theoretical expression of this metric as a function of the normalized CSA function. The simulation technique based on the equivalence of the spatial average and the ensemble time average is provided. Based on this simulation technique, we analyze the influence of the surface roughness of the target on this metric and then show the influencing factors of the metric performance, for example the finite sample effect and aperture size of the observation system. Experimental results are illustrated to examine the capability of this metric and the correctness of the discussion about the metric performance. (C) 2015 Optical Society of America
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55203
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, Y. Y.,J. Guo,L. S. Liu,et al. Clipped speckle autocorrelation metric for spot size characterization of focused beam on a diffuse target[J]. Optics Express,2015,23(6):7424-7441.
APA	Li, Y. Y.,J. Guo,L. S. Liu,T. F. Wang,&W. Tang and Z. H. Jiang.(2015).Clipped speckle autocorrelation metric for spot size characterization of focused beam on a diffuse target.Optics Express,23(6),7424-7441.
MLA	Li, Y. Y.,et al."Clipped speckle autocorrelation metric for spot size characterization of focused beam on a diffuse target".Optics Express 23.6(2015):7424-7441.

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