BREAKTHROUGH LASER TECHNOLOGIES FOR SMART MANUFACTURING, SPACE AND BIO-TECH APPLICATIONS (LasApp)
Published April 29, 2026 | Version v1
Journal article Open

Pedestal-free 7-rod-core Tm-doped fiber for fiber lasers

Authors/Creators

  • 1. ROR icon Czech Academy of Sciences, Institute of Photonics and Electronics
  • 2. ROR icon Czech Technical University in Prague

Description

Structured-core thulium-doped fibers were developed to reduce heat load, enable shorter-wavelength operation, and achieve a pedestal-free design. In a proof-of-principle experiment, laser slope efficiencies of 52% at 1907 nm and 54% at 1940 nm were achieved with respect to absorbed power.

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Additional details

Related works

Is supplement to
Dataset: https://doi.org/10.5281/zenodo.19700006 (URL)
Is supplemented by
Preprint: https://doi.org/10.48550/arXiv.2603.19916 (URL)

Funding

European Union
Průlomové laserové technologie pro chytrou výrobu, vesmírné a biotechnologické aplikace (LasApp) CZ.02.01.01/00/22_008/0004573
Czech Science Foundation
In-band pumped fiber lasers for wavelengths 2 microns 26-21543S

Dates

Submitted
2026-01-28
Accepted
2026-03-31
Available
2026-04-28