Taming Thermal Radiation with Non-Hermitian Metasurfaces

Gururaj V. Naik

doi:10.1117/12.2633168

3 October 2022 Taming Thermal Radiation with Non-Hermitian Metasurfaces

Gururaj V. Naik

Proceedings Volume PC12196, Active Photonic Platforms 2022; PC121961K (2022) https://doi.org/10.1117/12.2633168
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Thermal radiation prompted the birth of quantum mechanics, and yet engineering thermal radiation has mostly remained in the classical realm. Quantum description of thermal light sources requires non-Hermitian description. Here, we develop a non-Hermitian description of nanoscale thermal emitters and demonstrate them using hybrid plasmonic and photonic metasurfaces. Our work shows that phase, symmetry, and topology, the new design tools offered by the quantum treatment relax the trade-offs between various performance parameters. We show selective thermal emitters with an emitter efficiency >80%. Such extreme-engineered nanophotonic devices alone enable applications such as flexible thermophotovoltaic energy conversion and we demonstrate it.

Conference Presentation

Citation Download Citation

Gururaj V. Naik "Taming Thermal Radiation with Non-Hermitian Metasurfaces", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC121961K (3 October 2022); https://doi.org/10.1117/12.2633168

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