# van der Waals Decoration of Ultra-High-<i>Q</i> Silica Microcavities for χ<sup>(2)</sup>–χ<sup>(3)</sup> Hybrid Nonlinear Photonics

https://mdr.nims.go.jp/datasets/29f580d4-4d17-40ac-8b15-74551def7906

## File

- [fujii-et-al-2024-van-der-waals-decoration-of-ultra-high-q-silica-microcavities-for-χ(2)-χ(3)-hybrid-nonlinear-photonics.pdf](https://mdr.nims.go.jp/filesets/194e59b8-6350-40fc-b901-57b1d3494578/download) ([Detail](https://mdr.nims.go.jp/filesets/194e59b8-6350-40fc-b901-57b1d3494578.md))

## Id

29f580d4-4d17-40ac-8b15-74551def7906

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-09T09:23:09.323759Z

## Updated at

2024-08-21T23:30:13.901459Z

## Published at

2024-08-21T23:30:14.002615Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.4c00273

## Date published

2024-04-10

## Recorded date published

2024-4-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: van der Waals Decoration of Ultra-High-<i>Q</i> Silica Microcavities for
    χ<sup>(2)</sup>–χ<sup>(3)</sup> Hybrid Nonlinear Photonics
  title_type: original
  lang: en

## Description

- description: Optical nonlinear processes are indispensable in a wide range of applications,
    including ultrafast lasers, microscopy, and quantum information technologies.
    Among the diverse nonlinear processes, second-order effects usually overwhelm
    the higher-order ones, except in centrosymmetric systems, where the second-order
    susceptibility vanishes to allow the use of the third-order nonlinearity. Here
    we demonstrate a hybrid photonic platform whereby the balance between second-
    and third-order susceptibilities can be tuned flexibly. By decorating ultra-high-Q
    silica microcavities with atomically thin tungsten diselenide, we observe cavity-enhanced
    second-harmonic generation and sum-frequency generation with continuous-wave excitation
    at a power level of only a few hundred microwatts. We show that the coexistence
    of second- and third-order nonlinearities in a single device can be achieved by
    carefully choosing the size and location of the two-dimensional material. Our
    approach can be generalized to other types of cavities, unlocking the potential
    of hybrid systems with controlled nonlinear susceptibilities for novel applications.
  description_type: abstract
  lang: und

## Creator

- name: Shun Fujii
  role: author
- name: Nan Fang
  role: author
- name: Daiki Yamashita
  role: author
- name: Daichi Kozawa
  role: author
  orcid: https://orcid.org/0000-0002-0629-5589
  organization: National Institute for Materials Science
- name: Chee Fai Fong
  role: author
- name: Yuichiro K. Kato
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: two-dimensional materials
  schema: not_defined
- subject: ultra-high-Q microcavities
  schema: not_defined
- subject: second-harmonic generation
  schema: not_defined
- subject: nonlinear optics
  schema: not_defined
- subject: transition metal dichalcogenides
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '24'
  issue: '14'
  start_page: 4209
  end_page: 4216

## Conference



## Related item



## Funding

- funder_name: RIKEN
- identifier: JP22H01893
  funder_name: Japan Society for the Promotion of Science
- identifier: JP22K14623
  funder_name: Japan Society for the Promotion of Science
- identifier: JP22K14624
  funder_name: Japan Society for the Promotion of Science
- identifier: JP22K14625
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23H00262
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: 194e59b8-6350-40fc-b901-57b1d3494578
  filename: fujii-et-al-2024-van-der-waals-decoration-of-ultra-high-q-silica-microcavities-for-χ(2)-χ(3)-hybrid-nonlinear-photonics.pdf
  content_type: application/pdf
  size: 5216631
  md5: bc07d4131aab3cb9fb7dc17e9fa783d5

## Thumbnail

fileset_id: 194e59b8-6350-40fc-b901-57b1d3494578
filename: fujii-et-al-2024-van-der-waals-decoration-of-ultra-high-q-silica-microcavities-for-χ(2)-χ(3)-hybrid-nonlinear-photonics.pdf