Electrically switchable phase-type fractal zone plates and fractal photon sieves

Electrically switchable phase-type fractal zone plates and fractal photon sieves were fabricated using polymer-dispersed liquid crystal material based on a photomask. While both exhibited similar first-order diffraction behavior, the fractal photon sieves showed greatly suppressed diffraction at hig...

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Bibliographic Details
Published in:Optics express 2009-07, Vol.17 (15), p.12418-12423
Main Authors: Liu, Yan Jun, Dai, Hai Tao, Sun, Xiao Wei, Huang, Tony Jun
Format: Article
Language:English
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Summary:Electrically switchable phase-type fractal zone plates and fractal photon sieves were fabricated using polymer-dispersed liquid crystal material based on a photomask. While both exhibited similar first-order diffraction behavior, the fractal photon sieves showed greatly suppressed diffraction at higher orders. Compared with current amplitude-type photomasks, our switchable, phase-type devices demonstrated higher diffraction efficiency, an important factor in the future development of adaptive optics.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.17.012418