This phosphosilicate Yb-doped double-clad fiber offers high doping concentrations and high QCE values that ensure minimum fiber length, minimum pump power and reduced non-linearities. With all the benefits that phosphosilicate fibers have to offer, such as high energy saturation and no photodarkening, it is the perfect solution for a wide range of demanding pulsed 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
  • Low splice loss with standard fiber such as HI1060
  • Pulsed fiber lasers: gain media in pre-amplifiers or low power amplifiers for MOPA configuration
  • Material processing: laser marking, laser engraving, micromachining and welding
  • Medical
Cladding Absorption @ 915 nm (dB/m)
3.0 ± 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)
12 ± 1
Cladding Diameter (µm)
128 ± 3
Core/Cladding Concentricity Error (µm)
< 1.3
Coating Diameter (µm)
260 ± 20

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