Tue, 16 Sep 2025 00:26:13 +0000

Researchers designed a multiwavelength, polarization-insensitive metalens using stacked Huygens’ metasurfaces, each optimized for a specific NIR wavelength. It achieves near-diffraction-limited focusing at 2000 nm and 2340 nm with high efficiency and misalignment tolerance. The design is scalable, fabrication-friendly, and generalizable to complex phase profiles—enabling compact, multi-functional optical devices.