Multiwavelength Achromatic Deflector in the Visible Using a Single-Layer Freeform Metasurface.

ABSTRACT: Deflectors are essential for modulating beam direction in optical systems but often face form factor issues or chromatic aberration with conventional optical elements, such as prisms, mirrors, and diffractive/holographic optical elements. Despite recent efforts to address such issues using metasurfaces, their practicality remains limited due to operation wavelengths in the near-infrared or the fabrication difficulties inherent in the multilayer scheme. Here, we propose a novel single-layer metasurface achieving multiwavelength chromatic aberration-free deflection across the visible spectrum by employing the robust freeform design strategy to simplify the fabrication process. By properly selecting diffraction orders for red, green, and blue wavelengths to achieve identical wavelength-diffra

SUBMITTER: Choi T 

PROVIDER: S-EPMC11378335 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature