EyeSafe 40 Micron Core Holmium-Doped LMA All-Glass Double-Clad Fiber
True LMA fiber featuring a unique low NA (< 0.1) high concentration Ho-doped core design. The Ho-doped fiber can be pumped by a Tm-doped fiber laser at ~1950 nm and can achieve 60% efficiency. The Ho-doped fiber features a unique all-glass cladding design with a 40 µm diameter Ho-doped core, a glass inner cladding diameter of 250 µm, a 320 µm 0.22NA index depressed outer glass cladding for the pump radiation and a fluoroacrylate outer polymer jacket (40/250/320/400).
Geometrical & Mechanical Specifications
Coating Requirements: Low index Coating.
Features & Benefits
- Unique low NA Ho-doped core design — Robust single-mode beam quality
- NuCOAT fluoroacrylate coating — Greater fiber durability in extreme environmental operating & storage conditions
- High pump absorption — Short fiber length, efficient lasing in the ~2 μm window
- Unique all-glass double clad design — For achieving higher output powers
High power CW and pulsed EyeSafe (~2 μm) lasers and amplifiers
EyeSafe industrial and medical lasers
Military and commercial LIDAR
Nufern’s optical fiber products, including rare-earth doped, gyro, polarization-maintaining, radiation resistant, photosensitive, multimode and single mode, and any other optical fiber product including custom optical fibers, may be covered by one or more of the following pending or issued U.S. Patents, each of which is owned by or licensed by Nufern:
6,779,364; 6,832,026; 6,904,214; 6,950,586; 7,003,206; 7,050,686; 7,062,137; 7,110,647; 7,116,887; 7,167,621; 7,317,857; 7,371,019; 7,386,210; 7,400,812; 7,483,610; 7,634,164; 7,724,422; 5,949,941 (licensed from Furukawa Electric Co. of North America).
Moreover, use of Nufern’s optical fiber products, including modifications thereof, combinations with other products, or certain specific uses can necessitate additional customer licensing, particularly with respect to U.S. Patent nos. 5,818,630 (IMRA America, Inc.) and 6,496,301 (The United States of America as represented by the Secretary of the Navy). See the terms and conditions specific to your purchase.