Carbon Nanotube Array Based Binary Gabor Zone Plate Lenses

Sunan Deng, Tahseen Jwad, Chi Li, David Benton, Ali K. Yetisen, Kyle Jiang, Qing Dai, Haider Butt

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Abstract

Diffractive zone plates have a wide range of applications from focusing x-ray to extreme UV radiation. The Gabor zone plate, which suppresses the higher-order foci to a pair of conjugate foci, is an attractive alternative to the conventional Fresnel zone plate. In this work, we developed a novel type of Beynon Gabor zone plate based on perfectly absorbing carbon nanotube forest. Lensing performances of 0, 8 and 20 sector Gabor zone plates were experimentally analyzed. Numerical investigations of Beynon Gabor zone plate configurations were in agreement with the experimental results. A high-contrast focal spot having 487 times higher intensity than the average background was obtained.
Original languageEnglish
Article number15256
JournalScientific Reports
Volume7
Issue number1
DOIs
Publication statusPublished - 10 Nov 2017

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