Speckle reduction in holographic display with partially spatial coherent illumination

被引：9

作者：

Zhao, Zijie ^{[1
]}

Duan, Junyi ^{[2
]}

Liu, Juan ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Opt & Photon, Beijing Engn Res Ctr Mixed Real & Adv Display, Beijing 100081, Peoples R China

[2] Natl Inst Metrol, Ctr Adv Measurement Sci, Beijing 100029, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2022年 / 507卷

关键词：

Computer holography; Holographic display; Partial coherence in imaging; LOOK-UP-TABLE; PHASE; COMPUTATION; ALGORITHM; IMAGE;

D O I：

10.1016/j.optcom.2021.127604

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method of holographic reconstruction under partially spatial coherent illumination with different degree of coherence is proposed to suppress speckle noise based on theoretical analysis. The core factor of speckle reduction based on partially spatial coherent light is convolution operation in CGH reconstruction process. Numerical simulations and optical experiments are both performed to verify the proposed theory. The results reconstructed by proposed and traditional method are compared, and the speckle contrasts can be reduced to 0.05 and 0.08 at most in Fresnel and Fraunhofer zone respectively. The image quality is obviously improved. This method can provide further applications for three-dimensional holographic display, beam shaping and coherence degree modulation techniques.

引用

页数：8

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