Active Fibers
RE doped double cladding fibers
Thanks to their high RE solubility (up to 100 000 ppm) and low phonon energy, LVF fluoride fibers offer dozens of active transitions, enabling a broad range of application possibilities from visible to midinfrared.
We have a large stock of ZFG or IFG double cladding single mode fibers.
Most of them exhibit a double D-shape on the first cladding in order to improve the pump absorption.
Doped with: Er, Dy, Ho, Tm…
Codoped with: Pr/Yb…
We have also a stock of multimode double cladding fibers doped with Er, Tm, Pr… or co-doped Tm/Ho…
Hereinbelow, some significant realizations obtained by research labs with LVF RE-doped fibers:
Rare earth | Molar content (ppm) | ∅core/clad (µm) | λc (*) (µm) | Specificity | Realization | Publication |
|---|---|---|---|---|---|---|
Er | 70 000 | 15/240*260/290 | 2.5 | 2xD-Shape | 41 W CW laser at 2.94 µm | Aydin, 2018 |
Femtosecond (fs) laser at 2.8 µm | Duval, 2016 | |||||
fs laser tunable from 2.8 up to 3.6 µm | Duval, 2016 | |||||
In-amplifier supercontinuum | Gauthier, 2015 | |||||
Er | 50 000 | 10/240*260/290 | 2.5 | 2xD-Shape | NEW FIBER DESIGN (2019) | |
Er | 70 000 | 15/240*260/290 | 2.5 | 2xD-Shape
Polarization maintaining | NEW FIBER DESIGN (2019) | |
Er | 10 000 | 16.5/240*260/290 | 2.7 | 2xD-Shape | Polymer ablation | Frayssinous, 2018 |
5.6 W CW at 3.55 µm | Maes, 2017 | |||||
Ho | 100 000 | 16/90*100/155 | 4.2 | 2xD-Shape | 200 mW CW at 3.92 µm | Maes, 2018 |
Pr/Yb | 3000 / 20000 | 2xD-Shape | Vis emission at 491, 520, 535 and 620 nm | |||
(**) | 14/250/290 | 2.3 | Undoped |
(*)λc = cut-off wavelength
Fiber dimensions: Øcore/ Øclad1A* D1B/ Øclad2
Clad 1 = Øclad1A cladding with 2 D-shapes, separated of D1B
Clad 2 = Øclad2 second cladding = low index resin
(**) The undoped double-cladding fiber was designed for high power laser generation. The double cladding will enable you to inject the pump into the first cladding instead of the core of the doped fiber and thus distribute the pump absorption in the first meters of the fiber.
Standard price available
in our catalog on-line
Depending on your need and wavelength range of interest, fibers can be customized in order to adjust their cut-off wavelength, core diameter and rare earth content.
CUSTOMIZE
your own RE doped double cladding fiber
- Doping/co-doping (rare earth, molar content)
- Cut-off wavelength (single mode)
- Custom NA (single mode)
- Core size: ≥ 1 µm single mode), up to 1000 µm (multimode)
All our fibers are available as fiber patch cables or fiber bundles
You have requirements about high power laser delivery? LVF proposes mid-IR screened fibers and endcaps solutions.
