Phase-only transmissive spatial light modulator based on tunable dielectric metasurface

Rapidly developing augmented reality, solid-state light detection and ranging (LIDAR), and holographic display technologies require spatial light modulators (SLMs) with high resolution and viewing angle to satisfy increasing customer demands. Performance of currently available SLMs is limited by their large pixel sizes on the order of several micrometers. Here, we propose a concept of tunable dielectric metasurfaces modulated by liquid crystal, which can provide abrupt phase change, thus enabling pixel-size miniaturization. We present a metasurface-based transmissive SLM, configured to generate active beam steering with >35% efficiency and a large beam deflection angle of 11°. The high resolution and steering…

• IO
  Institution of Engineering and Technology
• NR
  National Research Foundation Singapore

  Award: NRF-NRFI2017-01
• SA
  Science and Engineering Research Council

  Awards: 152 73 00025, A18A7b0058