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