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Proceedings Paper

Phase compensation for eliminating black-matrix effect of phase-only spatial light modulator
Author(s): Jindong Tian; Dong Li; Haiou Qi; Jianfeng Zheng
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Paper Abstract

A method for improving the performance of phase-only spatial light modulator (SLM) is proposed in this paper. For an electrical-addressed SLM, the pixelated structure just likes a 2D black-matrix. It will have an intrinsic effect on the incident light whether image is loaded into SLM. This inherent effect was called black-matrix effect characterized with zero-order diffraction of high brightness and high-order diffraction terms in the Fourier plane. This is strongly influenced the quality of phase modulation. In order to eliminate the black-matrix effect of SLM, a linear phase map or a digital Fresnel lens is compensated to the original phase map. The black-matrix effect will be separated with the reconstruction pattern in the perpendicular plane of the optical axis or along the optical axis. Therefore, the black-matrix effect will be eliminated through digital phase compensation. The theoretical analyze, computer simulations and experimental results are all presented to demonstrate the validity. Possible applications include almost all phase modulation applications.

Paper Details

Date Published: 17 November 2010
PDF: 9 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78481E (17 November 2010); doi: 10.1117/12.869906
Show Author Affiliations
Jindong Tian, Shenzhen Univ. (China)
Dong Li, Shenzhen Univ. (China)
Haiou Qi, Shenzhen Univ. (China)
Jianfeng Zheng, Shenzhen Univ. (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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