供应nufern LMA-EYDF-25P/300-HE
Nufern's Large Mode Area (LMA) and Polarization Maintaining LMA (PLMA) Er/Yb co-doped fiber features a unique low NA (0.09) core design, achieved without sacrificing high pump conversion efficiency and developed for applications where robustly single-mode output beam quality is critical. The high NA (0.46) 300 μm cladding waveguide allows for efficient coupling of high pump powers, while the large core diameter (25 μm) maintains a large-mode field diameter and short device length thereby minimizing deleterious nonlinear effects such as SBS and SRS. They utilize the latest fiber design and NuCOATFA coating technology to ensure excellent preservation of beam quality and extended operating life at the high power levels demanded by today’s industrial fiber laser applications.
Optical Specifications
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| Operating Wavelength | 1530 – 1625 nm |
| Core NA | 0.090 |
| First Cladding NA (5%) | ≥ 0.46 |
| Cladding Attenuation | ≤ 30.0 dB/km @ 1095 nm
|
| Cladding Absorption | 2.60 ± 0.50 dB/m at 915 nm
|
| Core Absorption | 85.0 ± 15.0 dB/m near 1535 nm
|
Geometrical & Mechanical Specifications
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| Cladding Diameter (flat-to-flat) | 300.0 ± 8.0 µm |
| Core Diameter | 25.0 ± 2.0 µm |
| Coating Diameter | 450.0 ± 15.0 µm |
| Core/Clad Offset | ≤ 2.00 μm |
| Prooftest Level | ≥ 100 kpsi (0.7 GN/m²) |
Comments:
Coating Requirements: Low-index polymer coating.
