Directly and instantly seeing through random diffusers by self-imaging in scattering speckles  

作　　者：Jietao Liu Wenhong Yang Guofeng Song Qiaoqiang Gan 

机构地区：[1]Laboratory of Photonic Integrated Circuits,Xiong’an Institute of Innovation,Chinese Academy of Sciences,Xiong’an New Area,Beijing 071700,Hebei Province,China 2 Sustainability&Photonics Energy Research Laboratory,Material Science Engineering program,Division of Physical Science&Engineering,King Abdullah University of Science and Technology,Thuwal,Saudi Arabia

出　　处：《PhotoniX》2023年第1期674-687,共14页智汇光学（英文）

摘　　要：Imaging through scattering medium is challenging but important for different applications.Most advances rely on computational image reconstruction from scattering signals.In these conventional investigations,speckles were always treated as scrambled grainy patterns.Directly seeing through scattering diffusers has never been realized.Here,we report a new strategy to see through random diffusers directly using self-imaging of speckles.By analyzing the physics,a direct observation strategy through scattering media is reported with improved image quality.Using this method,we experimentally demonstrated reconstruction-free real-time imaging of static and moving objects with their actual orientation information under single-wavelength and white light illumination.We also proposed a modified speckle autocorrelation imaging(SAI)method inspired by the self-imaging results.Importantly,our strategy requires no pre-calibration or acquisition of point-spread-function,no active control of wavefronts or complicated equipment,nor iterations or carefully adjusted parameters,paving the way towards rapid and high-quality imaging through scattering diffusers.

关 键 词：speckle RANDOM INSTANT 

分 类 号：O43[机械工程—光学工程]