Article Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin Sheets

Nan Fang ; Daiki Yamashita ; Shun Fujii ; Keigo Otsuka ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials ScienceROR) ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials ScienceROR) ; Kosuke Nagashio ; Yuichiro K. Kato

Advanced Optical Materials - 2022 - Fang - Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin.pdf
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Nan Fang, Daiki Yamashita, Shun Fujii, Keigo Otsuka, Takashi Taniguchi, Kenji Watanabe, Kosuke Nagashio, Yuichiro K. Kato. Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin Sheets. Advanced Optical Materials. 2022, 10 (19), . https://doi.org/10.1002/adom.202200538
SAMURAI

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(abstract)

The unique optical properties of two-dimensional layered materials are attractive for achieving increased functionality in integrated photonics. Owing to the van der Waals nature, these materials are ideal for integrating with nanoscale photonic structures. Here we report on carefully designed air-mode silicon photonic crystal nanobeam cavities for efficient control through two-dimensional materials. By systematically investigating various types and thickness of two-dimensional materials, we are able to show that enhanced responsivity allows for giant shifts of the resonant wavelength. With atomically precise thickness over a macroscopic area, few-layer flakes give rise to quantization of the mode shifts. We extract the dielectric constant of the flakes and find that it is independent of the layer number down to a monolayer. Flexible reconfiguration of a cavity is demonstrated by stacking and removing ultrathin flakes. With an unconventional cavity design, our results open up new possibilities for photonic devices integrated with two-dimensional materials.

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Keyword: 2D materials, photonic crystal, nanobeam cavity

Date published: 2022-07-10

Publisher: Wiley

Journal:

  • Advanced Optical Materials (ISSN: 21951071) vol. 10 issue. 19

Funding:

  • Japan Society for the Promotion of Science JP20K15199
  • Japan Society for the Promotion of Science JP20H02558
  • Japan Society for the Promotion of Science JP20J00817
  • Japan Society for the Promotion of Science JP20K15120
  • Japan Society for the Promotion of Science JP20K15137
  • Japan Society for the Promotion of Science JP19K23593
  • Japan Society for the Promotion of Science JP18H03864
  • Japan Society for the Promotion of Science JP19H00755
  • Japan Society for the Promotion of Science JP21H05232
  • Japan Society for the Promotion of Science JP19H05790
  • Japan Society for the Promotion of Science JP20H00354
  • Japan Society for the Promotion of Science JP21H05237
  • Japan Society for the Promotion of Science JP21H05233
  • Ministry of Internal Affairs and Communications SCOPE 191503001
  • Ministry of Education, Culture, Sports, Science and Technology JPMXP0112101001
  • Ministry of Education, Culture, Sports, Science and Technology JPMXP09F19UT0075

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/adom.202200538

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Updated at: 2025-02-26 08:30:54 +0900

Published on MDR: 2025-02-26 08:30:54 +0900

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