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11 November 2014 4D imaging based on the Fresnel incoherent correlation holography
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Fresnel incoherent correlation holography (FINCH) is one of the 3D imaging techniques which records holograms under incoherent illumination. A spatial light modulator (SLM) is used to split the incoherent light reflected/emitted from each object point into two self-coherent spherical beams with different curvatures, and the interference fringes is recorded by a CCD. This technology has been well used in white light reflection imaging and 3D fluorescence microscope imaging. We present a new idea of 4D imaging including three-dimensional spatial information and one-dimensional spectral information on the basis of FINCH. A mathematical model of 4D FINCH system using dual diffractive lenses on a spatial light modulator has been established. We obtained the specific forms of the point spread function, the axial magnification and the reconstruction distance. The experimental results of 3D FINCH imaging are given and one example of 4D imaging with three channels is numerically simulated. And we discussed the key problems of 4D imaging at last.
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Xia Shi, Bin Yuan, Wufeng Zhu, Erjun Liang, Xiaomin Liu, and Fengying Ma "4D imaging based on the Fresnel incoherent correlation holography", Proc. SPIE 9271, Holography, Diffractive Optics, and Applications VI, 92710W (11 November 2014);


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