LinkMetal CNC High Hardness GaAs CO2 Laser Focus Lens

GaAs CO2 Laser Focus Lens 10.6μm | Gallium Arsenide

High quality GaAs (Gallium Arsenide) focus lens specially designed for 10.6μm CO2 laser equipment. Features high hardness, excellent scratch resistance and good thermal stability. It is a cost-effective alternative to ZnSe lenses, ideal for daily laser cutting and engraving operations where durability and value are priorities.

This complete product series includes 15 standard specifications, fully compatible with all mainstream CO2 laser cutting, engraving and marking machines. All lenses are manufactured with strict quality control to ensure reliable performance for general industrial applications.

Key Advantages of Our GaAs CO2 Focus Lenses

• 3x Harder Than ZnSe: Made from premium gallium arsenide material with Mohs hardness 4.5, 3 times harder than ZnSe (Mohs hardness 2.5). Provides excellent scratch resistance and durability, significantly extending service life in dusty environments.
• Good Optical Performance: Features anti-reflection coating optimized for 10.6μm wavelength. Delivers stable transmittance and consistent optical performance for most general laser applications.
• High Temperature Resistance: Excellent thermal stability and high temperature resistance. Not easy to deform under continuous operation, making it ideal for long production runs.
• Exceptional Value for Money: Significantly lower price than ZnSe lenses, greatly reducing your equipment operating and maintenance costs without compromising basic performance.
• 15 Standard Specifications: Complete range of diameters and focal lengths available, covering all mainstream CO2 laser machine models and application requirements.
• Universal Compatibility: Standard dimensions ensure perfect fit with all original and compatible CO2 laser cutting heads. Easy to install and replace with no additional debugging required.
• Reliable Quality Assurance: All lenses undergo strict dimensional inspection and optical performance testing before delivery, ensuring consistent performance and long service life.

Compatible Equipment & Available Specifications

Compatible Equipment

• All Mainstream CO2 Laser Cutting Machines (10W-1000W)
• All CO2 Laser Engraving Machines
• All CO2 Laser Marking Machines
• All 10.6μm CO2 Laser Processing Equipment

Available Focus Lens Specifications

• D12mm FL50.8mm (Ge): 12mm diameter, 50.8mm (2") focal length, Germanium material
• D18mm FL50.8mm: 18mm diameter, 50.8mm (2") focal length, GaAs material
• D18mm FL63.5mm: 18mm diameter, 63.5mm (2.5") focal length, GaAs material
• D18mm FL76.2mm: 18mm diameter, 76.2mm (3") focal length, GaAs material
• D19.05mm FL50.8mm: 19.05mm (3/4") diameter, 50.8mm (2") focal length, GaAs material
• D19.05mm FL63.5mm: 19.05mm (3/4") diameter, 63.5mm (2.5") focal length, GaAs material
• D20mm FL38.1mm: 20mm diameter, 38.1mm (1.5") focal length, GaAs material
• D20mm FL50.8mm: 20mm diameter, 50.8mm (2") focal length, GaAs material
• D20mm FL63.5mm: 20mm diameter, 63.5mm (2.5") focal length, GaAs material
• D20mm FL76.2mm: 20mm diameter, 76.2mm (3") focal length, GaAs material
• D20mm FL101.6mm: 20mm diameter, 101.6mm (4") focal length, GaAs material
• D25mm FL50.8mm: 25mm diameter, 50.8mm (2") focal length, GaAs material
• D25mm FL63.5mm: 25mm diameter, 63.5mm (2.5") focal length, GaAs material
• D25mm FL76.2mm: 25mm diameter, 76.2mm (3") focal length, GaAs material
• D25mm FL101.6mm: 25mm diameter, 101.6mm (4") focal length, GaAs material

Custom Specifications Available: For custom diameters, focal lengths or special requirements, please contact our sales team directly for personalized solutions.

Detailed Technical Specifications

Package Contents

• 1 x Selected Link Metal CNC GaAs/Ge CO2 Laser Focus Lens
• 1 x Hard Protective Storage Case
• 1 x Microfiber Cleaning Cloth
• 1 x Sealed Dust-proof Protective Packaging

Quality Assurance

All GaAs and Ge focus lenses from Link Metal CNC undergo strict dimensional inspection and optical performance testing before delivery. We ensure each lens provides stable performance and excellent value for money for general industrial applications.

We maintain strict ISO 9001 quality control standards to ensure consistent and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.

Frequently Asked Questions

Q: What is the difference between GaAs and ZnSe lenses?
A: GaAs (Gallium Arsenide) is 3 times harder than ZnSe, making it much more scratch resistant and durable in dusty environments. GaAs lenses are also significantly cheaper than ZnSe lenses. However, ZnSe has higher transmittance (>99% vs >98% for GaAs) and better thermal conductivity, making it more suitable for high power applications (>1000W).

Q: When should I choose GaAs lenses over ZnSe lenses?
A: Choose GaAs lenses if you have a low to medium power laser (≤1000W), perform general cutting and engraving tasks, operate in dusty environments, or are looking to significantly reduce your maintenance costs. Choose ZnSe lenses if you have a high-power laser (>1000W) or require maximum cutting efficiency.

Q: What is the difference between GaAs and Ge lenses?
A: Ge (Germanium) is even harder than GaAs (Mohs 6.0 vs 4.5) but has lower transmittance (≥96% vs ≥98%). Ge lenses are only available in small sizes and are suitable for very low power applications (<500W) where extreme scratch resistance is required.

Q: How long does a GaAs focus lens last?
A: Under normal operating conditions, a GaAs focus lens should last 3-5 months. This is longer than PVD ZnSe lenses due to its superior scratch resistance. Service life can be extended by using proper air filtration and regular cleaning.

Q: Can I use GaAs lenses in any CO2 laser machine?
A: Yes, GaAs lenses are manufactured to standard dimensions and are compatible with all mainstream CO2 laser machine brands. They are a direct drop-in replacement for original ZnSe lenses and require no additional debugging or modification.

Also available: Economical PVD ZnSe Lenses, Standard CVD ZnSe Lenses and Genuine II-VI Lenses for different power and budget requirements.

View our full range of laser cutting accessories including CO2 protective lenses, mirrors, nozzles and more.