Li, Shi-Qiang, Xuewu Xu, Rasna Maruthiyodan Veetil, Vytautas Valuckas, Ramón Paniagua-Domínguez, and Arseniy I. Kuznetsov. "Phase-only transmissive spatial light modulator based on tunable dielectric metasurface." Science 364, no. 6445 (2019): 1087-1090.
Abstract:
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 angle obtained provide opportunities to develop the next generation of LIDAR and display technologies.
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Funding Info:
The authors acknowledge financial support from National Research Foundation of Singapore (grant NRF-NRFI2017-01), IET A F Harvey Engineering Research Prize 2016, A*STAR SERC Pharos program (grant 152 73 00025) (Singapore), and AME Programmatic Grant A18A7b0058 (Singapore).
Description:
This is the author’s version of the work. It is posted here by permission of the AAAS for personal
use, not for redistribution. The definitive version was published in Science on [Vol 364 and 14 Jun 2019], DOI: 10.1126/science.aaw6747