Optimization of multiplexed holograms for multidimensional tomographic imaging

Lei Song; Zhuqing Jiang; Zhiqiang Xu; Jing Yang

doi:10.1117/12.870017

17 November 2010 Optimization of multiplexed holograms for multidimensional tomographic imaging

Lei Song, Zhuqing Jiang, Zhiqiang Xu, Jing Yang

Proceedings Volume 7848, Holography, Diffractive Optics, and Applications IV; 784828 (2010) https://doi.org/10.1117/12.870017
Event: Photonics Asia 2010, 2010, Beijing, China

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 2ΔΖ_FWHM, 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.

Citation Download Citation

Lei Song, Zhuqing Jiang, Zhiqiang Xu, and Jing Yang "Optimization of multiplexed holograms for multidimensional tomographic imaging", Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 784828 (17 November 2010); https://doi.org/10.1117/12.870017

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KEYWORDS

Holography

Multiplexing

Holograms

Image resolution

Imaging systems

3D image processing

3D image reconstruction

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