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arXiv · 1304.7874

Generation of Diffraction-Free Optical Beams Using Wrinkled Membranes

Ran Li·Hui Yi·Xiao Hu·Leng Chen·Guangsha Shi·Weimin Wang·Tian Yang
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Abstract

We report the first demonstration of wrinkled membranes as a kind of optical focusing devices, which are low cost, light weight and flexible. Our device consists of concentric wrinkle rings on a gold-PDMS bilayer membrane, which converts collimated illuminations to diffraction-free focused beams. Beam diameters of 300-400 μm have been observed in the visible range. By comparing the theoretically calculated and experimentally measured focal spot profiles, we predict a focal spot size as small as around 50 μm if fabrication eccentricity can be eliminated.

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Ran Li, Hui Yi, Xiao Hu, Leng Chen, Guangsha Shi, Weimin Wang, Tian Yang. 2013-04-30. Generation of Diffraction-Free Optical Beams Using Wrinkled Membranes. https://doi.org/10.1038/srep02775

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