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August 14, 2025Light Science & ApplicationsOpen Access

Functional Yb-doped fiber with a bat-type refractive index distribution for beyond kilowatt all-fiber single-frequency laser amplification

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Authors

WLWei LiuNanjing UniversityWLWei LiuNanjing UniversityYDYu DengSichuan Agricultural University

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Implication

Novel Yb-doped fiber achieves over one kilowatt output power in single-frequency laser amplification, suggesting breakthroughs in laser technology.

Key Points

  • Achieving over one kilowatt output power demonstrates significant progress in single-frequency laser amplification.
  • The system exhibits near single-mode beam quality measurements of Mx2 = 1.10 and Mx2 = 1.18.
  • The fiber's bat-type refractive index and low numerical aperture enable stable operation against SBS and TMI effects.
  • This development supports efficient laser amplification for advanced applications like gravitational wave detection systems.

Cite This Study

Liu et al. (2025) studied this question.

synapsesocial.com/papers/68a363670a429f797332a9ebhttps://doi.org/10.1038/s41377-025-01956-1
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