Datasheet
Components & Accessories
LMA-YDF-20/400-M Plus, Ultra Matched Yb-Doped Double Clad Optical Fiber
Coherent Ultra Matched (M+) Large Mode Area (LMA) active double clad fibers are designed for high power monolithic fiber lasers and amplifiers used in defense, industrial, and medical applications. Featuring a 20 µm core diameter and a 400 µm cladding diameter, these fibers ensure ultra-high precision matching with their passive counterparts, providing low splice loss and excellent performance. The NuCOAT fluoroacrylate coating enhances durability, ensuring consistent operation under extreme conditions. These fibers support high power levels while maintaining superior beam quality.
Features
- Ultra Matched (M+) design - Ensures the lowest possible splice loss
- NuCOAT fluoroacrylate coating - Superior environmental durability
- State-of-the-art Yb-doped glass - Optimized for generating high CW powers
- PANDA-style stress structure - Enhances birefringence and uniformity
- Proof tested to > 100 kpsi - Guarantees long-term reliability
- RoHS compliant
Applications
- Monolithic high-power lasers and amplifiers
- Material processing
- Non-linear optics / frequency doubling
- Defense
- Industrial and medical applications
Datasheet
| Parameter | LMA-YDF-20/400-M-Plus |
|---|---|
| Optical Specifications | |
| Operating Wavelength | 1060 - 1115 nm |
| Core NA | 0.065 ± 0.005 |
| Mode Field Diameter | 16.7 ± 1.0 μm @ 1060 nm |
| Core Attenuation | ≤ 15.0 dB/km @ 1200 nm |
| Cladding Attenuation | 0.40 ± 0.05 dB/m at 915 nm |
| Cladding NA | ≥ 0.46 |
| Slope Efficiency | > 70.0%@ 915 nm |
| Geometrical & Mechanical Specifications | |
| Cladding Diameter | 400.0 ± 7.0 μm |
| Core Diameter | 20.0 ± 1.5 μm |
| Coating Diameter | 550.0 ± 15.0 μm |
| Core Clad Offset | 1.20 μm |
| Coating Material | NuCOAT fluoroacrylate |
| Prooftest Level | ≥ 100 kpsi (0.7 GN/m²) |