# Lasing emission from ZnO hierarchical spherical microcavity

https://mdr.nims.go.jp/datasets/2c9e6899-3e8e-4d5d-bb33-b5b4cf2ba22e

## File

- [Lasing emission from ZnO.pdf](https://mdr.nims.go.jp/filesets/063ac43d-e3a7-4537-a1bf-f5232d909abe/download) ([Detail](https://mdr.nims.go.jp/filesets/063ac43d-e3a7-4537-a1bf-f5232d909abe.md))

## Id

2c9e6899-3e8e-4d5d-bb33-b5b4cf2ba22e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-12T07:23:34.332948Z

## Updated at

2025-04-14T23:30:22.416549Z

## Published at

2025-04-14T07:46:07.083219Z

## Doi

https://doi.org/10.48505/nims.5083

## First published url

https://doi.org/10.1088/2040-8986/ad2e1e

## Date published

2024-05-01

## Recorded date published

2024-5-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Lasing emission from ZnO hierarchical spherical microcavity
  title_type: original
  lang: en

## Description

- description: 'We investigated lasing characteristics of a ZnO hierarchical micro-spherical
    particles with diameters of 1 – 5 μm. The lasing emission consists of a small
    number of discrete laser peaks unlike conventional random lasing from ZnO nanopowder-assembly.
    Theoretical calculations based on a many-body theory revealed that the optical
    gain is achieved at the observed lowest lasing threshold value, 4 mJ∙cm^(-2)∙pulse^(-1),
    which corresponds to the excited carrier density ~2.4×〖10〗^25  m^(-3). Because
    the carrier density is much higher than the Mott density, the gain origin for
    lasing is electron-hole plasma recombination. The lasing frequency mode shift
    (~1.2 meV) is due to the refractive index change induced by exciting high carrier
    density up to 6.1×〖10〗^25  m^(-3). By changing hierarchical structures via controlling
    growth condition and performing the annealing treatment and performing the calculation
    of scattering efficiency of ZnO particles, we found that the hierarchy of the
    micro-spherical particle plays a crucial role of the lasing feedback: the strong
    light scattering at the interface between outer nanoparticles with the sizes of
    100 – 200 nm and smaller ones with the sizes of 10 – 60 nm consisting in the micro-spherical
    particle results in a light confinement. Furthermore, it has been confirmed that
    each discrete lasing mode shows strong gain competition with each other probably
    due to spatial overlap between the modes. These results suggest that both random
    scattering and microcavity modes contribute to the lasing oscillation.'
  description_type: abstract
  lang: und

## Creator

- name: Ryosuke Komatsu
  role: author
- name: Sota Yoshino
  role: author
- name: Noriko Saito
  role: author
  orcid: https://orcid.org/0000-0002-8104-0172
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Taisei Yamamoto
  role: author
- name: Toshihiro Nakamura
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: ZnO
  schema: not_defined
- subject: Laser
  schema: not_defined

## Rights

- description: This is the Accepted Manuscript version of an article accepted for
    publication in Journal of Optics.  IOP Publishing Ltd is not responsible for any
    errors or omissions in this version of the manuscript or any version derived from
    it.  The Version of Record is available online at https://doi.org/10.1088/2040-8986/ad2e1e.
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-04-11
end_date: 2025-04-11

## Journal

- title: Journal of Optics
  issn: '20408978'
  volume: '26'
  issue: '5'
  article_number: '055104'

## Conference



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## 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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## Fileset

- id: 063ac43d-e3a7-4537-a1bf-f5232d909abe
  filename: Lasing emission from ZnO.pdf
  content_type: application/pdf
  size: 1118087
  md5: d79944203caee1213d8058d3db4265a9

## Thumbnail

fileset_id: 063ac43d-e3a7-4537-a1bf-f5232d909abe
filename: Lasing emission from ZnO.pdf