Electrically tunable space-time metasurfaces at optical frequencies

Jared Sisler; Prachi Thureja; Meir Grajower; Ruzan Sokhoyan; Harry Atwater

doi:10.1117/12.2677496

4 October 2023 Electrically tunable space-time metasurfaces at optical frequencies

Jared Sisler, Prachi Thureja, Meir Grajower, Ruzan Sokhoyan, Harry Atwater

Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC1264601 (2023) https://doi.org/10.1117/12.2677496
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Space-time metasurfaces employ a spatial and temporal phase-gradient to impart momentum to input light in space and frequency. In this work, we used a reflective gate-tunable ITO-based metasurface operating at 1530 nm to generate diffraction of frequency-shifted light up to 1 MHz. Our device consists of an array of interdigitated plasmonic nanoantennas with two electrical contacts that are modulated with identical electrical waveforms, time-delayed by half a period, to diffract frequency-shifted light. The simultaneous control of spatial and spectral properties of light enabled by space-time metasurfaces is highly desired in applications such as LiDAR, LiFi, and space communication.

Conference Presentation

Citation Download Citation

Jared Sisler, Prachi Thureja, Meir Grajower, Ruzan Sokhoyan, and Harry Atwater "Electrically tunable space-time metasurfaces at optical frequencies", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC1264601 (4 October 2023); https://doi.org/10.1117/12.2677496

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