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PLMA-YDF-25/250

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25/250 Ytterbium-Doped LMA Double Clad PM Fiber

Nufern's Large Mode Area (LMA) Ytterbium-Doped Double Clad Fiber is ideal for high power fiber lasers and amplifiers used in military, industrial, and medical applications. LMA Yb-doped fibers enable efficient, compact, diode pumped fiber sources that are an attractive alternative to traditional solid-state lasers. This fiber features a 10/400 core/cladding size with a low NA (0.075) core, > 77% slope efficiency, > 100W CW output power and is suitable for use in single-mode applications.

Applications
  • High peak power amplifiers
  • LIDAR
  • Material processing
  • Non-linear optics/frequency doubling
Features & Benefits
  • LMA core design and short amplifier length — Useful for generating high peak powers
  • "Few" moded core design — Easy to maintain single mode LP01 beam through fiber & components
  • PANDA-style stress structure for increased birefringence — Superior optical performance and uniformity
  • All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling 

Optical Specifications

Operating Wavelength1060–1115 nm
Cladding Absorption1.7 ± 0.3 dB/m @ 915 nm
5.5 dB/m @ 975 nm (nominal)
Core Numerical Aperture0.06 ± 0.01
Cladding Numerical Aperture (nominal)0.46
Birefringence (nominal) 2.0 x 10-4

Geometrical & Mechanical Specifications

Core Diameter25.0 ± 2.5 µm
Clad Diameter250.0 ± 10.0 µm
Coating Diameter400 ± 20 µm
Outer Cladding MaterialLow Index Polymer
Proof Test Level≥ 100 kpsi (0.7 GN/m2)

Note: Perfectly matched passive versions are available for many of our active fibers.
See our Component and Delivery Fibers cheat sheet. (PDF)

RoHS Compliant