Smart Product Number: PLMA-YDF-20/400-VIII
20/400 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. These fibers enable efficient, compact, diode pumped lasers that directly compete with traditional solid-state lasers. The fiber features a 20 micron diameter core and 400 micron diameter clad size with a low NA (0.06) core. With > 75% slope efficiency and compatibility with operating at > 1kW of CW output power, this fiber is ideal for use in high power single-mode industrial fiber lasers.
Optical Specifications
Operating Wavelength
1060 – 1115 nm
Core NA
0.060 ± 0.010
First Cladding NA (5%) ≥ 0.46
Cladding Absorption
0.50 ± 0.05 dB/m at 915 nm
1.50 dB/m near 975 nm
Birefringence
nominal 3.5 × 10-4
Geometrical & Mechanical Specifications
Cladding Diameter
400.0 ± 15.0 µm
Core Diameter
20.0 ± 2.0 µm
Coating Diameter
550.0 ± 20.0 µm
Coating Material
Low Index Acrylate
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low Index Polymer
Features & Benefits
NuCOATFA fluoroacrylate coating - Greater fiber durability in extreme operating and storage conditions
LMA core design - Useful for generating high CW powers.
"Few" moded core design - Easy to maintain single mode LP01 beam through fiber & components
PANDA-style stress structure for increased birefringence - Superior optical perfomance and uniformity
All fiber proof tested to >100 kpsi - Critical for ensuring long term reliability when coiling.
Typical Applications
High power fiber lasers
CW and pulsed amplifiers
Military, industrial and medical
商品属性 [波长] 1060 - 1115 nm [芯径大小] 20 µm [首包层直径] 400 µm [数值孔径] 0.060 [光学包层] Double [掺杂类型] Yb