无散斑相位菲涅耳全息图和光束整形元件

Diffractive Optics and Micro-Optics Pub Date : 1900-01-01 DOI:10.1364/domo.1996.jtub.17

L. Neto, Y. Sheng

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引用次数: 1

摘要

计算机生成的全息图(CGH)已被证明是有效的光束整形的非周期衍射元件。元素设计通常采用基于Gerchberg-Saxton算法的迭代算法[1-3]。然而，这些算法使用的图像平面的初始随机相位和相位自由会在重构图像中引入散斑噪声[4]。提出了几种设计无散斑CGH的技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Speckle-free phase Fresnel holograms and beam shaping elements

Computer-generated holograms (CGH's) have proved effective as non-periodic diffractive elements for beam shaping. The elements are usually designed with the iterative algorithms based on the Gerchberg-Saxton Algorithm [1-3]. However, the initial random phase and the phase freedom in the image plane used in those algorithms introduce speckle noise in the reconstructed image [4]. Several techniques have been proposed for designing speckle-free CGH's.

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来源期刊

$Diffractive Optics and Micro-Optics$

Diffractive Optics and Micro-Optics

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