Smart Product Number: PLMA-YDF-25/400-VIII
25/400 Ytterbium-Doped LMA Double Clad Fibers
Nufern's 25/400 Ytterbium-doped double clad fiber is ideally suited for high average power pulsed and narrow linewidth CW fiber amplifier applications. Based on a "few-moded" waveguide structure, this fiber is incorporated into components and monolithic designs where maintaining beam quality can be more difficult. In addition to the standard active fiber, Nufern can supply a matching passive support fiber for component and pigtail development efforts. As with all Nufern standard Large Mode Area (LMA) fibers, these fibers are proof-tested to 100 kpsi, an industry requirement for long term reliability when coiling for mode filtering.
Optical Specifications
Operating Wavelength
1060 – 1115 nm
Core NA
0.060 ± 0.010
First Cladding NA (5%) ≥ 0.46
Cladding Absorption
0.80 ± 0.10 dB/m at 915 nm
2.40 dB/m near 975 nm
Birefringence
nominal 3.5 × 10-4
Geometrical & Mechanical Specifications
Cladding Diameter
400.0 ± 15.0 µm
Core Diameter
25.0 ± 2.5 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
The passive version of each fiber is also available - see PLMA-GDF-25/400 and LMA-GDF-25/400
Features & Benefits
NuCOATFA fluoroacrylate coating - Greater fiber durability in extreme operating and storage conditions
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 and 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
Typical Applications
High peak power amplifiers
LIDAR
Material processing
Non-linear optics/frequency doubling
商品属性 [波长] 1060 - 1115 nm [掺杂类型] Yb [芯径大小] 25 µm [首包层直径] 400 µm [数值孔径] 0.060 [光学包层] Double