GaAs valley photonic crystal waveguide with light-emitting InAs quantum dots

Takuto Yamaguchi, Yasutomo Ota, Ryota Katsumi, Katsuyuki Watanabe, Satomi Ishida, Alto Osada, Yasuhiko Arakawa, Satoshi Iwamoto

研究成果: Article査読

27 被引用数 (Scopus)

抄録

We report a valley photonic crystal (VPhC) waveguide in a GaAs slab with InAs quantum dots (QDs) as an internal light source exploited for the experimental characterization of the waveguide. A topological interface state formed at the interface between two topologically-distinct VPhCs is used as the waveguide mode. We demonstrate robust propagation for the near-infrared light emitted from the QDs, even with the presence of sharp bends, due to the topological protection of the guided mode. Our work will be of importance for developing robust photonic integrated circuits with small footprints, as well as for exploring active semiconductor topological photonics.

本文言語English
論文番号062005
ジャーナルApplied Physics Express
12
6
DOI
出版ステータスPublished - 2019 6月 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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