Fig. 1: Concept of the wide-FOV, high spatiotemporal resolution LiDAR. | Light: Science & Applications

Fig. 1: Concept of the wide-FOV, high spatiotemporal resolution LiDAR.

From: Spectral-acoustic-coordinated astigmatic metalens for wide field-of-view and high spatiotemporal resolution 3D imaging

Fig. 1: Concept of the wide-FOV, high spatiotemporal resolution LiDAR.

a Proposed LiDAR architecture integrating a metalens for wide-FOV capture of subtle environmental dynamics. b Implementation of high temporal resolution. Inter-axis rate matching via spectral-acousto-optic (spectral-AO) scanning enables full-field high-speed two-dimensional beam scanning. c Achievement of high spatial resolution. The wide-FOV astigmatic metalens (AML) simultaneously addresses the challenges of narrow spectral scanning FOV and beam astigmatism that degrade spatial resolution—issues that cannot be mitigated by a normal metalens (NML) without astigmatic compensation. Insets show the schematic phase profiles of the NML and AML. d Top: Imaging of a resolution target, demonstrating the system’s superior spatial resolution (6.46 mrad). Bottom: Time-sliced evolution of a rapidly rotating fan, highlighting the system’s high temporal resolution (FPAR ~ 36.6 MHz)

Back to article page