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Investigation of diffractive optical element for shaping a Gaussian beam into a ring-shaped pattern

机译:用于将高斯光束整形为环形图案的衍射光学元件的研究

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To convert a given single-mode He-Ne laser beam into a ring-shaped intensity distribution, a diffractive optical element with 16 levels was designed by YG amplitude-phase retrieval and iteration algorithm. This beam shaper is investigated experimentally and compared with the results of the computer design. The results show good conformity, and the measured diffraction efficiency is 87.2%. In addition, the diffractive effect is observed when the distance between diffractive optical element and CCD is changed. (C) 1999 Published by Elsevier Science Ltd. All rights reserved. [References: 20]
机译:为了将给定的单模He-Ne激光束转换成环形强度分布,通过YG幅相检索和迭代算法设计了16级的衍射光学元件。对该光束整形器进行了实验研究,并与计算机设计结果进行了比较。结果显示良好的一致性,并且测得的衍射效率为87.2%。另外,当改变衍射光学元件与CCD之间的距离时,观察到衍射效果。 (C)1999由Elsevier Science Ltd.出版。保留所有权利。 [参考:20]

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