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Proceedings Paper

Resampling masks for phase-shifting digital holography
Author(s): Wenhui Zhang; Liangcai Cao; Hao Zhang; Song Zong; Guofan Jin
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Paper Abstract

Holographic imaging is degraded severely by the speckle or incoherent noise. In this work, resampling mask method based on phase-shifting digital holography is proposed to reduce the reconstruction noise. The zero-order and the conjugate term of the hologram can be eliminated with four-step phase-shifting digital holography (PSDH). The complex amplitude of the object after propagation can be calculated by the phase-shifting algorithm. A phase-only spatial light modulator is used to realize PSDH in the experiment. The complex amplitude is encoded into several parts by resampling masks. A high quality reconstruction image with low noise is achieved through the superposition of the individually reconstruction of coded complex amplitudes. The experiment data go well with the asymptotic function. This method can be used for digital holographic imaging of the biological samples and microstructures. Experimental results prove the feasibility of this proposed method.

Paper Details

Date Published: 31 October 2016
PDF: 7 pages
Proc. SPIE 10022, Holography, Diffractive Optics, and Applications VII, 1002209 (31 October 2016); doi: 10.1117/12.2245807
Show Author Affiliations
Wenhui Zhang, Tsinghua Univ. (China)
Liangcai Cao, Tsinghua Univ. (China)
Hao Zhang, Tsinghua Univ. (China)
Song Zong, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10022:
Holography, Diffractive Optics, and Applications VII
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

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