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Proceedings Paper

Optimization of multiplexed holograms for multidimensional tomographic imaging
Author(s): Lei Song; Zhuqing Jiang; Zhiqiang Xu; Jing Yang
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Paper Abstract

The multiplexed holographic gratings can achieve simultaneously three-dimensional imaging of an object with the Bragg selectivity. The recording conditions of multiplexed holograms for imaging different depths of the object space are investigated experimentally. We find that the cross talk can be ignored when ΔΖ is approximately more than 2ΔΖFWHM, and the cross talk is degenerate with the increase of the depth separation. Further we adopt the point-spread function (PSF) of the imaging system to estimate depth resolution of the volume holographic imaging system. Then to avoid image overlap we examine multiplexed holograms recorded with different Δθ. We also calculate Δθ theoretically, and find that the theoretical value is consistent with the experimental result. The optimized holographic gratings are used to image the resolution target which is located at the different longitudinal positions to simulate a 3D object. The results demonstrate that the resolution target located at the two different depths can be reconstructed and clearly imaged on CCD.

Paper Details

Date Published: 17 November 2010
PDF: 9 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 784828 (17 November 2010); doi: 10.1117/12.870017
Show Author Affiliations
Lei Song, Beijing Univ. of Technology (China)
Zhuqing Jiang, Beijing Univ. of Technology (China)
Zhiqiang Xu, Beijing Univ. of Technology (China)
Jing Yang, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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