• Collection Of theses on high power laser and plasma physics
  • Vol. 14, Issue 1, 71203 (2016)
Hua Tao1,2, Suhas P. Veetil3, Xingchen Pan1,2, Cheng Liu1, and Jianqiang Zhu1,*
Author Affiliations
  • 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese academy of sciences, Beijing 100049, China
  • 3Department of Engineering Technology and Science, Higher Colleges of Technology, Fujairah 4114, United Arab Emirates
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    DOI: 10.3788/col201614.071203 Cite this Article
    Hua Tao, Suhas P. Veetil, Xingchen Pan, Cheng Liu, Jianqiang Zhu. Lens-free coherent modulation imaging with collimated illumination[J]. Collection Of theses on high power laser and plasma physics, 2016, 14(1): 71203 Copy Citation Text show less

    Abstract

    We propose a lens-free coherent modulation imaging (CMI) method for reconstructing a general complex-valued wave field from a single frame of a diffraction pattern. A numerical Fourier transform is introduced in the iterative reconstruction process to replace the lens or zone plate used in the current CMI technique to adopt the constraint on the Fourier components of the exit wave field of the sample. While the complexity of the experimental setup is remarkably reduced by replacing the zone plate and additional accessories with the numerical processing, the energy fluence loss induced by the undesired diffraction orders of the zone plate can be also avoided. The feasibility of the proposed technique is verified experimentally with visible light.
    Error=||ϕm,n(x,y)|I|2I,(1)

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    Hua Tao, Suhas P. Veetil, Xingchen Pan, Cheng Liu, Jianqiang Zhu. Lens-free coherent modulation imaging with collimated illumination[J]. Collection Of theses on high power laser and plasma physics, 2016, 14(1): 71203
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