Thulium Fibers
LMA Tm doped fiber
DCF-TM-25/400P-08 at a glance
3.9 ± 0.6
Cladding Absorption @ 790 nm (dB/m)
High and constant pump absorption.
Min 0.45
Numerical Aperture-Cladding
High-NA cladding that captures and guides the pump light.
0.085 ± 0.01
Numerical Aperture-Core
Light-acceptance angle of the core; with the core size, it sets how many modes are guided.
400 ± 10
Cladding diameter (µm)
Outer diameter of the glass cladding.
Oct.
Cladding geometry
Octogonal cladding shape.
565 ± 15
Coating diameter (µm)
Tested at >100 kpsi to ensure long-term reliability during winding.
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DCF-TM-25/400P-08
The DCF-TM-25/400P-08 is a large-mode-area (LMA), double-clad, thulium-doped fiber featuring an optimized pedestal core design for high-power operation in the 1.9 – 2.1 µm wavelenght range. With a 25 µm core and a 400 µm pump cladding, it delivers excellent beam quality, high brightness, and efficient pump absorption, making it an ideal gain medium for high-power fiber lasers and amplifiers.
DCF-TM-25/400P-08
