Datasheet

Components & Accessories

LMA-YDF-25/400-M Plus, High-Performance Matched Yb-Doped Double Clad Optical Fiber

Product image of LMA-YDF-25/400-M Plus, High-Performance Matched Yb-Doped Double Clad Optical Fiber

Coherent High-Performance Matched (M Plus) Large Mode Area (LMA) Yb-doped fibers are optimized for high-power laser systems requiring exceptional beam quality and low splice loss. Featuring a 25 µm core diameter and a 400 µm cladding diameter, these fibers provide enhanced optical and mechanical tolerances. The NuCOAT fluoroacrylate coating ensures superior environmental durability, making these fibers ideal for industrial, medical, and defense applications under demanding conditions.

Features

  • High-performance M Plus design - Optimized for superior beam quality
  • NuCOAT fluoroacrylate coating - Ensures long-term durability
  • 400 µm cladding diameter - Supports high pump absorption
  • Proof tested to > 100 kpsi - Guarantees reliability under demanding conditions
  • RoHS compliant

Applications

  • High-power CW and pulsed lasers
  • Industrial laser systems
  • Medical laser systems
  • Defense applications
Parameter LMA-YDF-25/400-M-Plus
Optical Specifications
Operating Wavelength 1060 - 1115 nm
Core NA 0.065 ± 0.005
Mode Field Diameter 19.2 ± 1.2 μm @ 1060 nm
Core Attenuation ≤ 30.0 dB/km @ 1300 nm
Cladding Attenuation ≤ 15.0 dB/km @ 1095 nm
Cladding Absorption 0.57 ± 0.07 dB/m at 915 nm
Cladding NA ≥ 0.46
Geometrical & Mechanical Specifications
Cladding Diameter 400.0 ± 7.0 μm
Core Diameter 25.0 ± 1.5 μm
Coating Diameter 500.0 ± 15.0 μm
Core Clad Offset ≤ 1.20 μm
Coating Material NuCOAT fluoroacrylate
Prooftest Level ≥ 100 kpsi (0.7 GN/m²)