LMA-YDF-20/400-HP-XM-HI (High-Absorption) Double-Clad Ytterbium-Doped Fiber
Coherent/Nufern's tenth-generation large-mode-area (LMA) double-clad ytterbium-doped GENX fibers use new glass compositions and waveguides. The glass composition allows higher ytterbium doping and absorption, giving users the choice of retaining the absorption specifications of the eighth generation or requesting higher absorption. GENX double-clad ytterbium-doped fibers are intended for the increasing output-power requirements of multi-kilowatt fiber lasers and fiber amplifiers. Compared with the industry-leading eighth-generation fibers, GENX fibers offer excellent photodarkening performance. High-absorption versions combine higher absorption with excellent photodarkening performance, also outperforming other fibers of the same absorption class or eighth-generation fibers. The large-mode-area design, small numerical aperture, and step-index profile provide excellent optical-to-optical conversion efficiency and low nonlinear effects, effectively increasing the threshold powers for mode instability (MI) and stimulated Raman scattering to help raise continuous-wave or pulsed fiber-laser output power or pulse energy. The latest low-index coating (HP) technology greatly improves coating reliability in high-humidity environments and extends fiber lifetime at higher power levels, meeting industrial users' growing demands for high power, environmental tolerance, and reliability. Four main models are available for continuous-wave or pulsed fiber lasers: LMA-YDF-20/400-HP-XM, LMA-YDF-20/400-HP-XM-HI (high absorption), LMA-YDF-14/250-HP-XM, and LMA-YDF-25/250-HP-XM.
Overview
Specifications
| Parameter | Value |
|---|---|
| Operating Wavelength (Normal Conditions) [Under Normal Conditions] | 1015-1115 nm |
| Peak Cladding Absorption (@915nm) [@915nm;@915nm)] | 0.42-0.54 dB/m |
| Core Attenuation (@1200nm) [@1200nm;@1200nm ;@1200nm )] | ≤15.0 dB/km |
| Cladding Attenuation (@1095nm) [@1095nm;@1095nm ;@1095nm )] | ≤15.0 dB/km |
| Core Numerical Aperture | 0.06-0.07 |
| Inner Cladding Numerical Aperture (5%) | ≥0.46 |
| Core Diameter | 20.0±1.50 μm |
| Slope Efficiency @915nm [@915nm;@915nm)] | 70 % |
| Inner Cladding Diameter (Flat to Flat) [flat to flat;flat to flat] | 400.0 ±10.0 μm |
| Core/Cladding Offset | ≤2 μm |
| Coating Diameter | 550.0 ±15.0 μm |
| Proof Test Level | 100-120 kpsi |
Applications
Key Features
Datasheet
Supplier Information
Loading...
Name
Phone
Organization
Use Case

Database Platform