All optical modulation of high-Q plasmonic resonances

Dhruv Fomra; Adam Ball; Henri J. Lezec; Nathaniel Kinsey

doi:10.1117/12.2633369

3 October 2022 All optical modulation of high-Q plasmonic resonances

Dhruv Fomra, Adam Ball, Henri J. Lezec, Nathaniel Kinsey

Proceedings Volume PC12196, Active Photonic Platforms 2022; PC1219618 (2022) https://doi.org/10.1117/12.2633369
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Metasurfaces are extremely versatile devices that offer wide control over the phase and amplitude of electromagnetic energy. However, their properties are often fixed at the time of fabrication. A critical challenge is to realize dynamically tunable metasurfaces, that are both fast and efficient. Applications such as telecommunications especially stand to benefit from metasurfaces with THz bandwidth. However, the large size of metasurfaces often limits their speeds to a few GHz. In this report, we demonstrate all optical tuning of a surface lattice resonance based plasmonic metasurface, that exhibits large Q-factors (>500), while providing 30x enhancement of pump beam absorption. This leads to over 150% modulation of the probe within the technologically relevant NIR window.

Conference Presentation

Citation Download Citation

Dhruv Fomra, Adam Ball, Henri J. Lezec, and Nathaniel Kinsey "All optical modulation of high-Q plasmonic resonances", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC1219618 (3 October 2022); https://doi.org/10.1117/12.2633369

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