# Design and Observation of Topological Band Gaps and Edge Modes of SOI Photonic Crystal Slabs in the Mid-Infrared Range

https://mdr.nims.go.jp/datasets/ea78bcf7-fb48-469e-9750-b4d0fe7940be

## File

- [別刷_jpsj.92.114402.pdf](https://mdr.nims.go.jp/filesets/bfb102e9-d149-43c0-9ce0-b3d8d3347eaa/download) ([Detail](https://mdr.nims.go.jp/filesets/bfb102e9-d149-43c0-9ce0-b3d8d3347eaa.md))

## Id

ea78bcf7-fb48-469e-9750-b4d0fe7940be

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-12-08T07:34:37.818902Z

## Updated at

2024-03-19T07:57:25.015147Z

## Published at

2024-03-19T07:57:25.102603Z

## Doi



## First published url

https://doi.org/10.7566/JPSJ.92.114402

## Date published

2023-11-15

## Recorded date published

2023-11-15

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Design and Observation of Topological Band Gaps and Edge Modes of SOI Photonic
    Crystal Slabs in the Mid-Infrared Range
  title_type: original
  lang: en

## Description

- description: We successfully materialized a complete common band gap of a 6.0% width
    relative to the mid-gap frequency for transverse-electric-like eigenmodes, which
    was shared by topologically trivial and non-trivial photonic crystals (PhCs) fabricated
    in the top Si layer of silicon-on-insulator wafers. We verified the presence of
    the complete common band gap, which is a prerequisite for the topologically protected
    edge mode, by angle-resolved reflection spectroscopy in the mid-infrared range.
    By applying polarization selection rules expected from the spatial symmetry of
    the electromagnetic eigenmodes, we confirmed the band inversion at the center
    of the first Brillouin zone (Gamma point) in a purely experimental manner. We
    further detected the edge modes localized on the boundary between the trivial
    and non-trivial PhCs, which were linearly polarized in the vicinity of the Gamma
    point due to the mixture of upper and lower branches with circular polarizations,
    and obtained their dispersion relation.
  description_type: abstract
  lang: eng

## Creator

- name: Afshan Begum
  role: author
  orcid: https://orcid.org/0000-0002-2384-3719
- name: Yuanzhao Yao
  role: author
  orcid: https://orcid.org/0000-0003-2504-2795
- name: Takashi Kuroda
  role: author
  orcid: https://orcid.org/0000-0001-6445-7673
  organization: National Institute for Materials Science
- name: Yoshihiko Takeda
  role: author
  orcid: https://orcid.org/0000-0003-4961-3687
- name: Naoki Ikeda
  role: author
  orcid: https://orcid.org/0000-0002-9552-7467
- name: Yoshimasa Sugimoto
  role: author
  orcid: https://orcid.org/0000-0002-2790-403X
- name: Takaaki Mano
  role: author
  orcid: https://orcid.org/0000-0002-6955-260X
- name: Kazuaki Sakoda
  role: author
  orcid: https://orcid.org/0000-0002-5530-3020

## Contact agent



## Publisher

organization: Physical Society of Japan

## Managing organization



## Keyword

- subject: topological edge mode
  schema: not_defined
- subject: photonic crystal
  schema: not_defined
- subject: topological band gap
  schema: not_defined
- subject: mid-infrared
  schema: not_defined
- subject: angle-resolved spectroscopy
  schema: not_defined
- subject: silicon on insulator
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  issn: '00319015'
  volume: '92'
  start_page: 11402
  end_page: 11402

## Conference



## Related item



## Funding

- identifier: Innovative Science and Technology Initiative for Security, Grant Number
    JPJ004596
  funder_name: ATLA, Japan

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: bfb102e9-d149-43c0-9ce0-b3d8d3347eaa
  filename: 別刷_jpsj.92.114402.pdf
  content_type: application/pdf
  size: 9469136
  md5: a8a5aba9e56adca823721dd8b1b045db

## Thumbnail

fileset_id: bfb102e9-d149-43c0-9ce0-b3d8d3347eaa
filename: 別刷_jpsj.92.114402.pdf