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51. Lasing in a topological photonic crystal nanocavity

Author

Katsuyuki Watanabe, Yasutomo Ota, Ryota Katsumi, Yasuhiko Arakawa, and Satoshi Iwamoto

Subjects
Materials science, Oscillation, Q factor, Single-mode optical fiber, Physics::Optics, Boundary (topology), Edge (geometry), Topology, Lasing threshold, Photonic crystal
Abstract

We report lasing oscillation in a zero-dimensional edge state formed at the boundary of two photonic crystal nanobeams with distinct band topologies. The topological origin of the nanocavity mode ensures a single mode operation.

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