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3 October 2022 Non-reciprocal thermal emitter with dynamic modulation of graphene
Alok Ghanekar, Jiahui Wang, Shanhui Fan, Michelle L. Povinelli
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Proceedings Volume PC12196, Active Photonic Platforms 2022; PC121960H (2022) https://doi.org/10.1117/12.2633270
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We propose a non-reciprocal infrared thermal emitter that exhibits unequal absorptivity and emissivity. Graphene grating over a slab is used to create high Q guided resonances. Dynamic modulation of Fermi energy of graphene is used to drive photonic transitions, inducing non-reciprocity. We show that strong contrast between absorptivity and emissivity can be obtained with realistic modulation frequencies of 10’s of GHz. This study presents a graphene-based platform for non-reciprocal thermal emitters.
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Alok Ghanekar, Jiahui Wang, Shanhui Fan, and Michelle L. Povinelli "Non-reciprocal thermal emitter with dynamic modulation of graphene", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC121960H (3 October 2022); https://doi.org/10.1117/12.2633270
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KEYWORDS
Modulation
Graphene
Infrared radiation
Dielectrics
Thermography
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