Superluminal synthetic motion with an optical space-time metasurface

Anthony Harwood; Stefano Vezzoli; T. V. Raziman; Calvin Hooper; Romain Tirole; Fanyi Wu; Simon Horsley; John B. Pendry; Stefan A. Maier; Riccardo Sapienza

doi:10.1117/12.3026893

3 October 2024 Superluminal synthetic motion with an optical space-time metasurface

Anthony Harwood, Stefano Vezzoli, T. V. Raziman, Calvin Hooper, Romain Tirole, Fanyi Wu, Simon Horsley, John B. Pendry, Stefan A. Maier, Riccardo Sapienza

Author Affiliations +

Proceedings Volume PC13109, Metamaterials, Metadevices, and Metasystems 2024; PC131090K (2024) https://doi.org/10.1117/12.3026893
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

The speed of transfer of mass may not be greater than the speed of light, however, the apparent motion of objects may be superluminal. Space-time modulations of a surface that exhibit superluminal motion have been the topic of myriad theoretical investigations that promise nanoscale control over electromagnetic waves via the Doppler effect and Fresnel drag. Herein, we use the ultrafast photoexcitation of a 40 nm film of Indium Tin Oxide to generate superluminally travelling modulations, which act as diffractive apertures in both the spatial and temporal domains. By designing continuous and discrete forms of motion we realise a tuneable platform for generation of complex momentum-frequency beam profiles and exploring exotic phenomena like hawking radiation.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Anthony Harwood, Stefano Vezzoli, T. V. Raziman, Calvin Hooper, Romain Tirole, Fanyi Wu, Simon Horsley, John B. Pendry, Stefan A. Maier, and Riccardo Sapienza "Superluminal synthetic motion with an optical space-time metasurface", Proc. SPIE PC13109, Metamaterials, Metadevices, and Metasystems 2024, PC131090K (3 October 2024); https://doi.org/10.1117/12.3026893

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