Year: 2026
Type: article
Abstract: ABSTRACT Focal plane arrays (FPAs) promise robust solid‐state beam steering for LiDAR and free‐space optical communications. However, the need for external collimation lenses hinders chip‐scale compactness. Discrete switching between FPA elements further introduces blind spots and limits the number of resolvable points, restricting applications that require continuous tracking. Here, we demonstrate a silicon photonic beam steerer based on a metalens FPA that monolithically integrates the collimation lens on‐chip. Thermo‐optic prisms enable continuous fine‐tuning, eliminating blind spots and doubling the number of resolvable points. Continuous steering over a 62° field of view is achieved while maintaining high beam quality, with an average sidelobe suppression ratio of 19 dB.
Source: Nanophotonics
DOI: 10.1002/nap2.70274
Institution: National Yang Ming Chiao Tung University
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,995
OpenAlex ID: W7143365899