Active metamaterials and devices: From rapidly-tunable lenses to emergent polaritonic materials

Gennady B. Shvets

doi:10.1117/12.2678511

4 October 2023 Active metamaterials and devices: From rapidly-tunable lenses to emergent polaritonic materials

Gennady B. Shvets

Proceedings Volume PC12647, Active Photonic Platforms (APP) 2023; PC126470E (2023) https://doi.org/10.1117/12.2678511
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

One of the attractions of resonant metamaterials is the possibility of tuning their resonant frequencies in real time by integrating them with actively-controlled materials. In this talk, I will describe how metasurfaces can be combined with liquid crystals to develop a new class of electrically-controlled varifocal metalenses operating at multiple wavelengths. Experimental demonstrations of imaging using actively controlled varifocal and bifocal metalenses will be presented, and new approaches to making widefield electrically-tunable metalenses will be described. I will also describe how electrically-biased plasmonic metasurfaces – also known as metagates – can be integrated with 2D materials to simultaneously modify the band structure of free carriers and plasmons. The resulting active material possesses emergent polaritonic properties that are absent without the metagate.

Conference Presentation

Citation Download Citation

Gennady B. Shvets "Active metamaterials and devices: From rapidly-tunable lenses to emergent polaritonic materials", Proc. SPIE PC12647, Active Photonic Platforms (APP) 2023, PC126470E (4 October 2023); https://doi.org/10.1117/12.2678511

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