Tunable photonic metasurfaces: fundamentals and applications

Maxim R. Shcherbakov

doi:10.1117/12.2633822

3 October 2022 Tunable photonic metasurfaces: fundamentals and applications

Maxim R. Shcherbakov

Proceedings Volume PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX; PC1219716 (2022) https://doi.org/10.1117/12.2633822
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Photonic metasurfaces—two-dimensional arrangements of resonant nanoparticles with designer optical responses—have emerged as a game-changer in the field of flat optics. However, most metasurfaces exhibit fixed properties after fabrication, and adding tunability expands vastly the scope of the metasurface use scenarios. Here, we review our recent results in metasurfaces tunable at various time scales, from seconds to femtoseconds. We start by using liquid crystals as switching agents for metalenses with electrically actuated focal spots at low (< 10 V) voltages and high focal spot tunability. The second part of the talk demonstrates pico- and femtosecond-scale tuning in semiconductor metasurfaces that provide an ultrafast platform for all-optical information processing. Finally, we outline the potential use of tunable metasurfaces in polarization synthesizers, nonlinear and quantum optics, and frequency conversion on demand.

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Citation Download Citation

Maxim R. Shcherbakov "Tunable photonic metasurfaces: fundamentals and applications", Proc. SPIE PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX, PC1219716 (3 October 2022); https://doi.org/10.1117/12.2633822

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KEYWORDS

Dielectrics

Dielectric polarization

Frequency conversion

Optical design

Semiconductors

Ultrafast phenomena

Nonlinear optics

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