Tunable non-reciprocal thermal radiation with dynamic modulation of graphene

Alok Ghanekar; Jiahui Wang; Shanhui Fan; Michelle Povinelli

doi:10.1117/12.2650799

17 March 2023 Tunable non-reciprocal thermal radiation with dynamic modulation of graphene

Alok Ghanekar, Jiahui Wang, Shanhui Fan, Michelle Povinelli

Proceedings Volume PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII; PC124310M (2023) https://doi.org/10.1117/12.2650799
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We design a non-reciprocal infrared thermal emitter that exhibits unequal absorptivity and emissivity. A graphene grating over a slab is used to create high Q-guided resonances. Non-reciprocity is induced by dynamic modulation of the Fermi energy of graphene to drive interband photonic transitions. 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. These results open up exciting new possibilities for electrical control over absorptive and emissive characteristics in the infrared.

Conference Presentation

Citation Download Citation

Alok Ghanekar, Jiahui Wang, Shanhui Fan, and Michelle Povinelli "Tunable non-reciprocal thermal radiation with dynamic modulation of graphene", Proc. SPIE PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII, PC124310M (17 March 2023); https://doi.org/10.1117/12.2650799

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