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    Depth resolution enhancement in double-detection optical scanning holography

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    Date
    2013-05-01
    Author
    Ou, H. Y.
    Poon, Ting-Chung
    Wong, K. K. Y.
    Lam, Edmund Y.
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    Abstract
    We propose an optical scanning holography system with enhanced axial resolution using two detections at different depths. By scanning the object twice, we can obtain two different sets of Fresnel zone plates to sample the same object, which in turn provides more information for the sectional image reconstruction process. We develop the computation algorithm that makes use of such information, solving a constrained optimization problem using the conjugate gradient method. Simulation results show that this method can achieve a depth resolution up to 1 mu m. (C) 2013 Optical Society of America
    URI
    http://hdl.handle.net/10919/25901
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    • Scholarly Works, Electrical and Computer Engineering [541]

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