摘要
Based on probability density functions,we present a theoretical model to explain filtered ghost imaging(FGI)we first proposed and experimentally demonstrated in 2017[Opt.Lett.425290(2017)].An analytic expression for the joint intensity probability density functions of filtered random speckle fields is derived according to their probability distributions.Moreover,the normalized second-order intensity correlation functions are calculated for the three cases of low-pass,bandpass and high-pass filterings to study the resolution and visibility in the FGI system.Numerical simulations show that the resolution and visibility predicted by our model agree well with the experimental results,which also explains why FGI can achieve a super-resolution image and better visibility than traditional ghost imaging.
作者
刘忠源
孟少英
陈希浩
Zhong-Yuan Liu;Shao-Ying Meng;Xi-Hao Chen(Key Laboratory of Optoelectronic Devices and Detection Technology,College of Physics,Liaoning University,Shenyang 110036,China)
基金
Project supported by the National Key Research and Development Program of China(Grant No.2018YFB0504302)
the Project of Innovation and Entrepreneurship Training Program for college students of Liaoning University(Grant No.S202110140003)。