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Optical Engineering • new

Speckle-reduced holographic display by modulating complex amplitude in single-lens system
Author(s): Chenliang Chang; Jun Xia; Yijun Qi; Caojin Yuan; Shouping Nie
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Paper Abstract

This paper proposes a method for calculating phase-only computer-generated hologram (CGH) in holographic display with reduced speckle noise. The method works by encoding the desired complex-amplitude field of object into a phase-only CGH by a linear canonical transform algorithm. The complex-amplitude field can then be reconstructed independently from the encoded CGH using a filter at the Fourier plane of a single-lens optical system. The feasibility and effectiveness of the proposed method was verified by a simulation experiment. An optical experiment for holographic display was also conducted with reduced speckle using a single phase-only spatial-light modulator. The object was, in fact, reconstructed with different depth of focus clearly without speckle noise due to the simultaneous modulation of both amplitude and phase, confirming our method’s ability to suppress speckle noise in holographic displays by modulating complex amplitude in three-dimensional space.

Paper Details

Date Published: 23 June 2016
PDF: 6 pages
Opt. Eng. 55(6) 063110 doi: 10.1117/1.OE.55.6.063110
Published in: Optical Engineering Volume 55, Issue 6
Show Author Affiliations
Chenliang Chang, Nanjing Normal Univ. (China)
Jun Xia, Southeast Univ. (China)
Yijun Qi, Southeast Univ. (China)
Caojin Yuan, Nanjing Normal Univ. (China)
Shouping Nie, Nanjing Normal Univ. (China)


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