Lensless Ghost Diffraction with Partially Coherent Sources: Effects of the Source Size, Transverse Coherence, Detector Size and Defocusing Length  

作　　者：LIN Jie CHENG Jing 林洁;程静(School of Electronics and Information Engineering,South China University of Technology,Guangzhou 510641;School of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006;Department of Physics,South China University of Technology,Guangzhou 510641)

机构地区：[1]School of Electronics and Information Engineering,South China University of Technology,Guangzhou 510641 [2]School of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006 [3]Department of Physics,South China University of Technology,Guangzhou 510641

出　　处：《Chinese Physics Letters》2011年第9期132-135,共4页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China(10774047,10934011);the Fundamental Research Funds for Central University(SCUT);the State Key Laboratory of Precision Spectroscopy,and the University Youth Foundation(GDUT 112004).

摘　　要：Lensless ghost diffraction with partially coherent sources is investigated theoretically and numerically.Based on the classical optical coherent theory and the Gauss–Shell model of the partially coherent sources,we derive an analytical imaging formula of lensless ghost diffraction(LGD).Using this formula,we can see the effects of the transverse size and coherence of the sources,the detector size and defocusing length on the quality of LGD.Numerical results are presented to show that for different detector sizes and defocusing lengths,high quality LGD can be realized by using sources with appropriate transverse sizes and coherent widths.These findings can be used to choose the optimal parameters in the design of a realistic LGD system.

关 键 词：GHOST GHOST coherent 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]