DCF-UN-30/250-070
- Core Numerical Aperture
- 0.070 ± 0.005
- Cladding Numerical Aperture
- > 0.45
- Background Loss @ 1200 nm (dB/km)
- < 15.0
DCF-YB-30/250EH at a glance
Key specifications
-
2.2 ± 0.3
Cladding Absorption @ 915 nm (dB/m)
High effective pump absorption – length reduction and nonlinear effect mitigation.
-
30.0 ± 2.0
Core Diameter (µm)
Diameter of the light-guiding core.
-
0.061 ± 0.002
Core Numerical Aperture
Light-acceptance angle of the core; with the core size, it sets how many modes are guided.
-
250 ± 5
Cladding Diameter (µm)
Outer diameter of the glass cladding.
-
Min. 0.45
Cladding Numerical Aperture
High-NA cladding that captures and guides the pump light.
-
(6.8)
Cladding Absorption @ 975 nm (nominal) (dB/m)
Pump light absorbed per metre by the doped core, measured through the cladding.
Description
Coractive’s DCF-YB-30/250EH Yb fiber shows excellent photodarkening resistance performance ensuring high reliability and long-term stability. This fiber shows high absorption as well as excellent beam quality and is ideal for high-power pulsed fiber lasers and amplifiers used for industrial applications.
Features & Benefits
- High effective pump absorption – length reduction and nonlinear effect mitigation
- Low photodarkening at high power – ensures long-term stability
- Higher energy saturation threshold – increases energy per pulse
Applications
- Pulsed lasers & amplifiers
- Amplifier section of multi-stage high-power amplifiers
- Lasers for marking
- Low energy laser cleaning
DCF-YB-30/250EH
Specifications
| Optical | |
|---|---|
| Cladding Absorption @ 915 nm (dB/m) | 2.2 ± 0.3 |
| Cladding Absorption @ 975 nm (nominal) (dB/m) | (6.8) |
| Core Numerical Aperture | 0.061 ± 0.002 |
| Cladding Numerical Aperture | Min. 0.45 |
| Geometrical & Mechanical | |
| Core Diameter (µm) | 30.0 ± 2.0 |
| Cladding Diameter (µm) | 250 ± 5 |
| Cladding geometry | Octogonal |
| Core/Cladding Concentricity Error (µm) | ≤ 1.5 |
| Coating Diameter (µm) | 375 ± 20 |
| Proof Test (kpsi) | <=100 |
| Environmental | |
| Storage Temperature (°C) | -40 to +85 |
DCF-YB-30/250EH
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