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Articles by Vin-Cent Su
Metasurface-based perfect vortex beam for optical eraser - Communications Physics
Abstract Perfect vortex beams (PVBs) take advantage of conventional vortex beams regarding their property of constant diameter of the annular intensity distribution on different topological charges (TCs), facilitating spatially coupling multiple beams with different TCs simultaneously. However, there are demands for PVBs with larger TCs that can be integrated with CMOS-fabrication processes in applications since conditional PVBs are composed of bulky optical components.
Wide-Angle Optical Metasurface for Vortex Beam Generation
This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticle by , , and * Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan * Author to whom correspondence should be addressed.
Technological process optimization and measurement of image quality of the electrically bifocal metalens
This Letter describes the design procedure and process optimization of the electrically bifocal metalens. In our design, horizontal and vertical polarization is manipulated by applying a suitable voltage to a twisted nematic liquid crystal (TN-LC) cell. Each nanostructure is designed to be a rectangular prism, making different polarizations of light experience various phase delays, thus causing bi-focus.
Achromatic metalens array for full-colour light-field imaging
Abstract A light-field camera captures both the intensity and the direction of incoming light1,2,3,4,5. This enables a user to refocus pictures and afterwards reconstruct information on the depth of field. Research on light-field imaging can be divided into two components: acquisition and rendering. Microlens arrays have been used for acquisition, but obtaining broadband achromatic images with no spherical aberration remains challenging.
A broadband achromatic metalens in the visible
Metalenses consist of an array of optical nanoantennas on a surface capable of manipulating the properties of an incoming light wavefront. Various flat optical components, such as polarizers, optical imaging encoders, tunable phase modulators and a retroreflector, have been demonstrated using a metalens design.
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