Integrated Fiber End Cap Lenses For High Power Lasers
The Hobbite Integrated Fiber End Cap Lens is a high-power optical component specifically designed for the output ends of fiber lasers and fiber amplifiers. By expanding the output beam, it effectively reduces the optical power density at the fiber facet, minimizing the risk of damage under high-power operation.
Meanwhile, the specially designed angled end surface significantly decreases back reflections, ensuring stable laser output. The curvature (R) of the end face can be customized according to customer requirements — any value below a hemisphere is supported.
Key Features
- High Back Reflection Loss – Suppresses optical feedback and protects the laser source.
- Low Beam Distortion – Maintains excellent beam quality after expansion.
- Large Beam Expansion Ratio – Effectively reduces output power density at the fiber tip.
- High Power Handling Capability – Suitable for high-peak or continuous-wave laser applications.
- Customizable Curvature & Coating – Supports flexible optical design based on customer needs.
Share to:
This End Cap Lens integrates the fiber end cap and optical lens into a single structure, providing both beam expansion and protection functions. It is ideal for high-peak-power and high-average-power laser systems, offering low beam distortion and excellent transmission stability.
Product Advantages
Hobbite’s Integrated Fiber End Cap Lens offers both structural compactness and thermal robustness. Through precision optical alignment and advanced anti-reflective coatings, it achieves low-loss, high-stability beam output suitable for demanding laser systems. Our in-house design and polishing capabilities enable full customization—from lens curvature and material selection to coating optimization—ensuring reliable optical performance under extreme laser conditions.
Applications
- High-power fiber lasers
- High-power fiber amplifiers
- Scientific and experimental laser systems
- Precision optical measurement setups
Technical Specifications
| Parameter | Unit | High Power End Cap Lens | Low Power End Cap Lens |
|---|---|---|---|
| Model | — | ECL-xxxx-20/400-HP-02/10 | ECL-xxxx-20/400-LP-02/10 |
| Coating Wavelength | nm | 650/1064, 900–1100, 1900–2100, or custom | Same as left |
| Operating Wavelength | nm | 950, 980, 1064, 1900, 2000 | — |
| Fiber Type | — | LMA-GDF-20/400-09M | LMA-GDF-20/400-09M |
| End Cap Material | — | Corning 7980/7979, Heraeus 300/313 | Corning 7980/7979 |
| Dimension Range | mm | Ø1.8–20 × 4–50 or custom | Ø1.8–20 × 4–50 or custom |
| Coating Band | — | AR@900–1100 nm or 1900–2050 nm / Custom | AR@900–1100 nm / Custom |
| Damage Threshold | J/cm² | 10–40 | 5–8 |
| Typical End Cap Size | mm | Ø2.78 × 5.91 | Ø2.78 × 8.42 |
