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20 January 2006 Iterative reconstruction of wave front from an in-line hologram sequence
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Proceedings Volume 6027, ICO20: Optical Information Processing; 602729 (2006)
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China
Digital holography is a powerful imaging technology in which the reconstruction processing is accomplished via a computer and no wet processing is required. Therefore, it can obtain the image of an object in real time. Furthermore, both the amplitude and phase information of a wave front can be obtained simultaneously. In-line digital holography can effectively utilize the spatial-bandwidth product of the digital recorder, such as CCD or CMOS. Reconstruction algorithms allow a continuous development and expand the applications of the digital holography. In this presentation, a novel method will be presented for reconstruction of wave front from a series of in-line holograms. After determining the phase and amplitude distribution of the wave front at a given plane, the original object can be reconstructed via the inverse propagation. Due to no reference wave is required in this approach, the optical setup is relatively simplified, the size of the recording object can be enlarged, and the signal-noise-ratio of the system can be improved. The simulation results based on the Fresnel transform are presented to demonstrate the validity of this new approach. The image reconstructed from experimentally recorded holograms by using the Rayleigh-Sommerfeld approximation corresponds to the original object well.
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Yan Zhang, De-Xiang Zheng, Jing-Ling Sheng, Cun-Lin Zhang, and Giancarlo Pedrini "Iterative reconstruction of wave front from an in-line hologram sequence", Proc. SPIE 6027, ICO20: Optical Information Processing, 602729 (20 January 2006);

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