A dual-mode LiDAR system enabled by mechanically tunable hybrid cascaded metasurfaces.

ABSTRACT: Light detection and ranging (LiDAR) is widely used for active three-dimensional (3D) perception. Beam scanning LiDAR provides high accuracy and long detection range with limited detection efficiency, while flash LiDAR can achieve high-efficiency detection through the snapshot approach at the expense of reduced accuracy and range. With the synergy of these distinct detection approaches, we develop a miniaturized dual-mode, reconfigurable beam forming device by cascading Pancharatnam-Berry phase and propagation phase metasurfaces, integrated with a micro-actuator. By modulating incident light polarization, we can switch the output beam of the device between the beam array scanning mode and flash illuminating mode. In the scanning mode, the device demonstrates a continuously tunable angular r

SUBMITTER: Zhang L 

PROVIDER: S-EPMC12379129 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature