# Anisotropic below bandgap harmonic generation in <i>β</i>-gallium oxide

https://mdr.nims.go.jp/datasets/b4d52410-7d2c-4790-b349-c18531b4b24c

## File

- [oe-32-26-47296.pdf](https://mdr.nims.go.jp/filesets/01f2fde0-46ca-47b5-a63d-e50bcb6bbab0/download) ([Detail](https://mdr.nims.go.jp/filesets/01f2fde0-46ca-47b5-a63d-e50bcb6bbab0.md))

## Id

b4d52410-7d2c-4790-b349-c18531b4b24c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-19T01:30:43.521373Z

## Updated at

2024-12-20T07:30:44.098879Z

## Published at

2024-12-20T07:30:44.251398Z

## Doi



## First published url

https://doi.org/10.1364/oe.525696

## Date published

2024-12-16

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Anisotropic below bandgap harmonic generation in <i>β</i>-gallium oxide
  title_type: original
  lang: en

## Description

- description: "Harmonic generation in wide bandgap semiconductors and dielectrics
    has attracted\r\na surge of interest as a compact solid-state light source and
    as a method of mapping the band\r\nstructure of the material itself. Longer driving
    wavelengths can support longer electron trajectories\r\nand suppress interband
    transitions, yielding spectra sensitive to crystal orientation and band\r\nshapes.
    Here, we combine a long wavelength laser to drive harmonic generation in a wide\r\nband-gap
    material with applications in photonics and power electronics, beta-gallium oxide\r\n(β-Ga2O3).
    We generate harmonics up to the ninth order (H9=3.7 eV) in air, with a ≈ 3.0 μm,\r\n100
    kHz, 40 fs mid-infrared (MIR) driving laser in (100) and (010) oriented single
    crystals of\r\nβ-Ga2O3. We observe odd and even harmonics, spectral interference,
    and the strong anisotropic\r\nresponse of both odd and even harmonics to the incident
    laser polarization. Our results are\r\nexplained in terms of the electronic structure
    and macroscopic optical properties of β-Ga2O3."
  description_type: abstract
  lang: und

## Creator

- name: Mukhtar Hussain
  role: author
  orcid: https://orcid.org/0000-0003-3142-9945
- name: André Mesquita Antunes
  role: author
- name: Gonçalo Vaz
  role: author
  orcid: https://orcid.org/0009-0002-0557-7725
- name: Joana Alves
  role: author
  orcid: https://orcid.org/0000-0002-5472-9433
- name: Hugo Pires
  role: author
  orcid: https://orcid.org/0000-0003-1521-6392
- name: Tayyab Imran
  role: author
  orcid: https://orcid.org/0000-0001-7881-8687
- name: Marco Peres
  role: author
- name: Katharina Lorenz
  role: author
- name: Encarnación Víllora
  role: author
- name: Kiyoshi Shimamura
  role: author
  orcid: https://orcid.org/0000-0001-6502-8731
- name: Saibabu Madas
  role: author
- name: Mousumi Upadhyay Kahaly
  role: author
- name: Subhendu Kahaly
  role: author
  orcid: https://orcid.org/0000-0001-7600-3310
- name: Gonçalo Figueira
  role: author
  orcid: https://orcid.org/0000-0001-9316-6824
- name: Marta Fajardo
  role: author
- name: Gareth Williams
  role: author

## Contact agent



## Publisher

organization: Optica Publishing Group

## Managing organization



## Keyword

- subject: β-Ga2O3
  schema: not_defined
- subject: Harmonic generation in wide bandgap semiconductors
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Optics Express
  issn: '10944087'
  volume: '32'
  issue: '26'
  start_page: 47296
  end_page: 47305

## Conference



## Related item



## Funding

- identifier: PD/BD/135224/2017
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: UIDB/50010/2020
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: '90254'
  funder_name: Ministerstvo Školství, Mládeže a Tělovýchovy
- identifier: 2022.00804 CEECIND
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: 2022.05329.PTDC
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: 2022.09213.PTDC
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: GINOP-2.3.6-15-2015-00001
  funder_name: European Commission
- identifier: LA/P/0061/202
  funder_name: Fundação para a Ciência e a Tecnologia
- identifier: PD/BD/135177/2017
  funder_name: Fundação para a Ciência e a Tecnologia

## 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



## Software



## Custom property



## Fileset

- id: 01f2fde0-46ca-47b5-a63d-e50bcb6bbab0
  filename: oe-32-26-47296.pdf
  content_type: application/pdf
  size: 8687800
  md5: '084497aa834a5a91c1e063077bbb411e'

## Thumbnail

fileset_id: 01f2fde0-46ca-47b5-a63d-e50bcb6bbab0
filename: oe-32-26-47296.pdf