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All-dielectric subwavelength metasurface focusing lens.

Content Provider	Semantic Scholar
Author	West, Paul Richard Stewart, James Lynn Kildishev, Alexander V. Shalaev, Vladimir M. Shkunov, Vladimir V. Strohkendl, Friedrich Zakharenkov, Yuri A. Dodds, R. Kenneth Byren, Robert Manhattan Beach
Copyright Year	2014
Abstract	We have proposed, designed, manufactured and tested low loss dielectric micro-lenses for infrared (IR) radiation based on a dielectric metamaterial layer. This metamaterial layer was created by patterning a dielectric surface and etching to sub-micron depths. For a proof-of-concept lens demonstration, we have chosen a fine patterned array of nano-pillars with variable diameters. Gradient index (GRIN) properties were achieved by engineering the nano-pattern characteristics across the lens, so that the effective optical density of the dielectric metamaterial layer peaks around the lens center, and gradually drops at the lens periphery. A set of lens designs with reduced reflection and tailorable phase gradients have been developed and tested, demonstrating focal distances of a few hundred microns, beam area contraction ratio up to three, and insertion losses as low as 11%.
Starting Page	2213
Ending Page	2230
Page Count	18
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://projects.iq.harvard.edu/files/muri_metasurfaces/files/west_all_dielectric_subwavelength.pdf
Alternate Webpage(s)	https://engineering.purdue.edu/~shalaev/Publication_list_files/All-dielectric%20subwavelength%20metasurface%20focusing%20lens%20(2014).pdf
PubMed reference number	25401653v1
Alternate Webpage(s)	https://doi.org/10.1364/OE.22.026212
DOI	10.1364/oe.22.026212
Journal	Optics express
Volume Number	22
Issue Number	21
Language	English
Access Restriction	Open
Subject Keyword	3-Iodobenzylguanidine Clinical act of insertion Diameter (qualifier value) Distance Immunoglobulin lambda-Chains Insertion Mutation Lens (device) Micron Oral Wafer Revision procedure Scientific Publication Silicon Sleep Apnea, Obstructive wavelength
Content Type	Text
Resource Type	Article

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