This phosphosilicate Yb-doped double-clad fiber features high and flattened pump absorption with photodarkening-free performance. This fiber is the ideal solution for a wide range of demanding high peak power pulsed fiber laser and amplifier applications in the industrial and medical markets

Features & Benefits
  • Large core diameter with high pump absorption – allows a shorter fiber length for a more compact and less expensive design while reducing non-linear effects
  • Photodarkening-free – ensures stable long-term operation
  • Wide, flat absorption from 910 nm to 970 nm – reduces pump cooling and allows 940-960 nm pumping
  • Batch-to-batch consistency in beam quality performance
  • High-energy / high peak power pulsed lasers & amplifiers for MOPA configuration
  • Laser marking and engraving
  • Medical
Cladding Absorption @ 915 nm (dB/m)
5.0 ± 0.5
Cladding Absorption @ 975 nm (nominal) (dB/m)
Core Numerical Aperture
0.08 ± 0.01
Cladding Numerical Aperture
> 0.45
Geometrical & Mechanical
Core Diameter (µm)
20 ± 2
Cladding Diameter (µm)
128 ± 3
Core/Cladding Concentricity Error (µm)
< 1.5
Coating Diameter (µm)
260 ± 20

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