Dielectric longitudinal bifocal metalens with adjustable intensity and high focusing efficiency.
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DOI: 10.1364/oe.27.000680
Abstract: Metalens recently attracts enormous attention due to its microscale figure and versatile functionalities. With the combination of geometric phase and propagation phase, we first wrote the phase equation of bifocal metalens that can high efficiently… read more here.
Keywords: bifocal metalens; two foci; intensity; dielectric longitudinal ... See more keywords
Broadband achromatic longitudinal bifocal metalens in the visible range based on a single nanofin unit cell.
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DOI: 10.1364/oe.450601
Abstract: Metasurfaces provide a remarkable platform to manipulate over phase, amplitude, and polarization flexibly and precisely. Bifocal metalens draws great research interest due to its ability of converging wavefronts to different focal positions horizontally and longitudinally.… read more here.
Keywords: broadband achromatic; achromatic longitudinal; bifocal metalens; based single ... See more keywords