Publications by authors named "Jigen Ding"
Article Synopsis
- A beam homogenizer using a random metalens array (RMA) improves beam shaping by dividing a laser beam into 28 × 28 unique beams with different speckle patterns.
- The design employs an enhanced Gerchberg-Saxton algorithm, resulting in over 90% uniformity in simulations and 95.9% in experimental trials.
- This technology could significantly benefit LiDAR and laser engraving systems by enhancing beam uniformity and reducing system size.
We propose a flat retroreflector that can efficiently reflect the electromagnetic waves back along its incident direction in a wide continuous range of angles. This retroreflector consists of a quadratic metalens and a flat metallic reflector at the focal plane of the former. The quadratic metalens is a dielectric pillar array encoded with a quadratic phase profile and it is embedded in the top side of the substrate.
View Article and Find Full Text PDFWe demonstrate a high-efficiency on-chip one-dimensional metalens for three-dimensional (3D) light focusing. The metalens consists of a one-dimensional dielectric nano-antenna array, which scatters the evanescent wave of a nano-waveguide into free space and focuses this scattered light into a 3D ring. The corresponding phase profile of the metalens is controlled by the relative locations of antennas in the array.
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