# Transparent Er:(Y,La)                    <sub>2</sub>                    O                    <sub>3</sub>                    Ceramics With High La                    <sup>3+</sup>                    Concentration for Mid‐Infrared Laser Applications

https://mdr.nims.go.jp/datasets/8169f376-2f5a-4544-b4bd-ebc397d98eba

## File

- [Journal of the American Ceramic Society - 2026 - Xu - Transparent Er  Y La 2O3 Ceramics With High La3  Concentration for.pdf](https://mdr.nims.go.jp/filesets/20812673-68ff-4ea8-8a73-75c44028c3f6/download) ([Detail](https://mdr.nims.go.jp/filesets/20812673-68ff-4ea8-8a73-75c44028c3f6.md))

## Id

8169f376-2f5a-4544-b4bd-ebc397d98eba

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-22T01:06:31.952980Z

## Updated at

2026-07-22T01:09:18.439201Z

## Published at

2026-07-23T09:30:06.163603Z

## Doi



## First published url

https://doi.org/10.1111/jace.71031

## Date published

2026-07-21

## Recorded date published

2026-7

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: |-
    Transparent Er:(Y,La)
                        <sub>2</sub>
                        O
                        <sub>3</sub>
                        Ceramics With High La
                        <sup>3+</sup>
                        Concentration for Mid‐Infrared Laser Applications
  title_type: original
  lang: en

## Description

- description: Exploration of mid-infrared laser materials with broad emission spectra
    is crucial for the generation of ultrashort pulses, particularly in spectroscopic
    and material processing applications. The incorporation of La3+ ions into Er:Y2O3,
    a representative mid-infrared laser material, induces crystal lattice distortion
    and broadens its emission spectrum. However, the La3+ doping concentration is
    typically limited to approximately 10 at.% owing to the formation of secondary
    phases. In this study, transparent (Er0.05Y0.95-xLax)2O3 mixed sesquioxide ceramics
    with high La3+ concentration of x = 0.2 was fabricated together with x = 0, 0.05,
    and 0.1 via co-precipitation and low temperature spark plasma sintering (SPS)
    to investigate the effects of La3+ concentration on mid-infrared emission properties.
    Both the emission spectral width and luminescence lifetime at approximately 2700
    nm increased with increasing La3+ concentration. For x = 0.2, the values were
    approximately 17 nm and 3.8 ms, respectively, compared to approximately 4 nm and
    3.3 ms for x = 0. Although the x = 0.2 sample achieved an in-line transmittance
    above 80% at 2720 nm, it was still lower than those of samples with lower La3+
    content. Microstructural analysis revealed that La3+ addition reduced the average
    grain size and formed residual pores, likely responsible for increased optical
    scattering. To eliminate the residual pores, post-hot isostatic pressing (HIP)
    treatment was conducted at various temperatures, which resulted in improved optical
    transmittance. We believe that optimizing processing conditions could further
    enhance optical quality at high La3+ concentrations, making it promising candidates
    for mid-infrared laser applications.
  description_type: abstract
  lang: und

## Creator

- name: Zehao Xu
  role: author
  orcid: https://orcid.org/0009-0007-0336-3332
- name: Hiroaki Furuse
  role: author
  orcid: https://orcid.org/0000-0002-9008-1697
- name: Shogo Miyoshi
  role: author
- name: Tohru S. Suzuki
  role: author

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: co-precipitation
  schema: not_defined
- subject: laser materials
  schema: not_defined
- subject: mid-infrared
  schema: not_defined
- subject: spark plasma sintering
  schema: not_defined
- subject: transparent ceramics
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of the American Ceramic Society
  issn: '00027820'
  volume: '109'
  issue: '7'
  article_number: e71031

## Conference



## Related item



## Funding

- identifier: JPMJFR203S
  funder_name: JST

## 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: 20812673-68ff-4ea8-8a73-75c44028c3f6
  filename: Journal of the American Ceramic Society - 2026 - Xu - Transparent Er  Y
    La 2O3 Ceramics With High La3  Concentration for.pdf
  content_type: application/pdf
  size: 4170641
  md5: df75b0f091df446b88a3b192eaa12b1c

## Thumbnail

fileset_id: 20812673-68ff-4ea8-8a73-75c44028c3f6
filename: Journal of the American Ceramic Society - 2026 - Xu - Transparent Er  Y
  La 2O3 Ceramics With High La3  Concentration for.pdf