Customized thermal and guided-wave surface emission with nonlocal metasurfaces

Adam Overvig; J. Ryan Nolen; Andrea Alù

doi:10.1117/12.2648495

17 March 2023 Customized thermal and guided-wave surface emission with nonlocal metasurfaces

Adam Overvig, J. Ryan Nolen, Andrea Alù

Proceedings Volume PC12432, High Contrast Metastructures XII; PC124320C (2023) https://doi.org/10.1117/12.2648495
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

While conventional metasurfaces manipulate free-space light, here we overview two nonlocal metasurface architectures capable of customizing their own surface emission. The first, called “thermal metasurfaces”, produce thermal emission with custom wavefronts and polarization within the narrow bandwidth of a critically coupled quasi-bound state in the continuum. We report the first demonstration of unidirectional, spin-selective emission, achieved with silicon-based metasurfaces. The second, called “leaky-wave metasurfaces”, scatter guided waves to free space. These devices represent a generalized replacement for grating couplers, having equivalent form factor but complete control over the amplitude, phase, and polarization.

Conference Presentation

Citation Download Citation

Adam Overvig, J. Ryan Nolen, and Andrea Alù "Customized thermal and guided-wave surface emission with nonlocal metasurfaces", Proc. SPIE PC12432, High Contrast Metastructures XII, PC124320C (17 March 2023); https://doi.org/10.1117/12.2648495

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