Speckle reduction method with phase range limited diffractive optical element

	Speckle reduction method with phase range limited diffractive optical element
	Liang, C.-Y.; W. Zhang; D.-W. Rui; Y.-X. Sui and H.-J. Yang
	2017
发表期刊	Guangzi Xuebao/Acta Photonica Sinica
卷号	46 期号:1
摘要	According to the generation mechanism of speckle, utilizing the concept of interference on a pixel point, a speckle suppression method was proposed which can reduce the Speckle Contrast (SC) of the projection image by limiting the phase distribution range in the optical field. The SC formula is derived in the uniform interval phase range for partially developed speckle conditions, showing that when phase distribution rang is limited between 0.6 and 2, a quasi-oscillatory behavior of SC appears with the change of phase distribution rang; and SC will be falling rapidly with the lessening of phase distribution rang when phase distribution rang is smaller than 0.6. An ideal simulation model and a real simulation model were established to verify the correctness and feasibility of this method. In the ideal simulation model, the SC can be reduced from 66.44% to 0% as the phase range limitation varying from 2 to 0. In the real simulation model, the actual structure of the optical path was simulated in the laser projection system, there are two diffractive optical elements in the real simulation model, one is for laser shaping, and the other one is for limiting the phase range of optical field, the SC is reduced from 92.78% down to 2.09% in the real simulation model. The proposed approach presents a significant reference with a low power consumption and a stable display architecture for speckle suppression application in holographic display. 2017, Science Press. All right reserved.
收录类别	ei
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59045
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liang, C.-Y.,W. Zhang,D.-W. Rui,et al. Speckle reduction method with phase range limited diffractive optical element[J]. Guangzi Xuebao/Acta Photonica Sinica,2017,46(1).
APA	Liang, C.-Y.,W. Zhang,D.-W. Rui,&Y.-X. Sui and H.-J. Yang.(2017).Speckle reduction method with phase range limited diffractive optical element.Guangzi Xuebao/Acta Photonica Sinica,46(1).
MLA	Liang, C.-Y.,et al."Speckle reduction method with phase range limited diffractive optical element".Guangzi Xuebao/Acta Photonica Sinica 46.1(2017).

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