Spectral tomographic imaging with aplanatic metalens  

作　　者：Chen Chen Wange Song Jia-Wern Chen Jung-Hsi Wang Yu Han Chen Beibei Xu Mu-Ku Chen Hanmeng Li Bin Fang Ji Chen Hsin Yu Kuo Shuming Wang Din Ping Tsai Shining Zhu Tao Li 

机构地区：[1]National Laboratory of Solid State Microstructures,Key Laboratory of Intelligent Optical Sensing and Integration,Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China [2]Collaborative Innovation Center of Advanced Microstructures,Nanjing,China [3]Research Center for Applied Sciences,Taipei,11529 Taiwan,China [4]Department of Physics,Taiwan University,Taipei,10617 Taiwan,China [5]Graduate Institute of Electronics Engineering,Taiwan University,Taipei,10617 Taiwan,China

出　　处：《Light(Science & Applications)》2019年第1期258-265,共8页光（科学与应用)（英文版）

基　　金：the financial support from The National Key R&D Program of China(2016YFA0202103,2017YFA0303700);the National Natural Science Foundation of China(Nos.91850204,11674167,11621091,11774164);the Department of Science and Technology,Taiwan,China(Grant No.MOST-107-2112-M-001-042-MY3,MOST-107-2911-I-001-508,MOST-107-2911-I-001-510,MOST-107-2923-M-001-010-MY3).

摘　　要：Tomography is an informative imaging modality that is usually implemented by mechanical scanning,owing to the limited depth-of-field(DOF)in conventional systems.However,recent imaging systems are working towards more compact and stable architectures;therefore,developing nonmotion tomography is highly desirable.Here,we propose a metalens-based spectral imaging system with an aplanatic GaN metalens(NA=0.78),in which large chromatic dispersion is used to access spectral focus tuning and optical zooming in the visible spectrum.After the function of wavelength-switched tomography was confirmed on cascaded samples,this aplanatic metalens is utilized to image microscopic frog egg cells and shows excellent tomographic images with distinct DOF features of the cell membrane and nucleus.Our approach makes good use of the large diffractive dispersion of the metalens and develops a new imaging technique that advances recent informative optical devices.

关 键 词：tuning SWITCHED DISPERSION 

分 类 号：TN2[电子电信—物理电子学]