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Proceedings Paper

LED holographic imaging by spatial-domain diffraction computation of textured models
Author(s): Ding-Chen Chen; Xiao-Ning Pang; Yi-Cong Ding; Yi-Gui Chen; Jian-Wen Dong
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Paper Abstract

Unavoidable speckle noise on reconstructed image in laser-based holographic system has been a serious problem in holographic display, due to both temporal and spatial coherence of laser. Employing partially coherent light into optics experiment is an effective way to reduce the speckle noise and thus enhance the signal-to-noise ratio. We will show you the analysis on the coherence of input light, which will affect the quality of the reconstructed image by computer generated hologram (CGH). LED light source with band-pass filters and spatial filters is used to achieve different levels of coherence. The experimental results show high agreement with our analysis. We will also show you how to eliminate the unexpected fringes by employing fast Fourier transform, which can overcome the drawback in our previous proposal with a full analytical algorithm for encoding the CGH of polygonal model. In conclusion, we propose the LED-based holographic imaging system, in order to improve the quality of the holographic imaging.

Paper Details

Date Published: 11 November 2014
PDF: 7 pages
Proc. SPIE 9271, Holography, Diffractive Optics, and Applications VI, 92710X (11 November 2014); doi: 10.1117/12.2071688
Show Author Affiliations
Ding-Chen Chen, Sun Yat-Sen Univ. (China)
Xiao-Ning Pang, Sun Yat-Sen Univ. (China)
Yi-Cong Ding, Sun Yat-Sen Univ. (China)
Yi-Gui Chen, Sun Yat-sen Univ. (China)
Jian-Wen Dong, Sun Yat-Sen Univ. (China)


Published in SPIE Proceedings Vol. 9271:
Holography, Diffractive Optics, and Applications VI
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

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