hBN-Based Photonic Crystal Cavities for Photonic Integrated Circuits

Sunjung An
Kyung Hee University, Seoul, Republic of Korea

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We report narrowband thermal radiation from a graphene emitter integrated with a hexagonal boron nitride (hBN) photonic crystal cavity (PCC). The graphene emitter, encapsulated by hBN,shows broadband thermal radiation[1]. By fabricating hBN PCCs with a designed array of holes,
including defects, and integrating the graphene emitter into these structures, we achieve narrowband thermal radiation. Resonance is confirmed through both simulations and experiments. This study is significant for the development of hBN-based high-quality quantum
light sources and resonators in photonic integrated circuits (PICs). By utilizing the excellent optical properties of graphene and the high quality factors of hBN PCCs, we have developed a high-performance light source and resonator system. This advancement opens new possibilities for developing advanced PICs with enhanced controllability and performance, paving the way for future innovations in photonics.

References

[1] Young Duck Kim et al, Nano Lett, 18(2), 934 (2018)

Email: dkstjswnd@khu.ac.kr