LinkMetal CNC CVD ZnSe CO₂ Laser Beam Combiner (Red Dot Alignment)

CVD ZnSe CO₂ Laser Beam Combiner | Red Dot Alignment

High precision CVD ZnSe beam combiner, the essential component for CO₂ laser alignment systems. Optimized for 45° angle of incidence, transmits >99% of the 10.6μm CO₂ laser beam while reflecting a bright clear red alignment beam (632.8nm). Enables accurate laser positioning, reduces setup time and significantly improves work efficiency.

This product is manufactured from high purity CVD zinc selenide with precision dichroic coating. Standard dimensions ensure direct replacement for most mainstream CO₂ laser cutting and engraving machines. All beam combiners undergo 100% optical testing before delivery.

Key Advantages of Our CO₂ Laser Beam Combiners

• Bright Clear Red Dot Alignment: Reflects >90% of 632.8nm red light, producing a sharp, bright red dot that is easy to see even in bright workshop environments.
• >99% CO₂ Laser Transmittance: Exceptionally high transmittance at 10.6μm wavelength, resulting in almost no energy loss and maintaining maximum laser cutting power.
• Precision Dichroic Coating: Features durable multi-layer dichroic coating with excellent adhesion and stability. Maintains consistent performance over long-term use.
• Plano-Parallel Design: Precision polished plano-parallel surfaces with zero optical power. Ensures no beam distortion or focal shift, maintaining perfect cutting accuracy.
• Standard Dimensions: Available in two standard sizes, direct replacement for most original CO₂ laser machine beam combiners.
• Easy Installation & Replacement: Simple drop-in installation with no optical alignment required. Can be replaced in minutes, minimizing downtime.
• High Quality CVD ZnSe Material: Made from premium high purity CVD zinc selenide with excellent thermal stability and low absorption.

Compatible Equipment & Available Sizes

Compatible Equipment

• All Mainstream CO₂ Laser Cutting Machines
• All CO₂ Laser Engraving Machines
• All CO₂ Laser Marking Machines
• All 10.6μm CO₂ Laser Processing Equipment with Red Dot Alignment

Available Beam Combiner Sizes

• D20mm × T2mm: 20mm diameter, 2mm thickness
• D25mm × T2mm: 25mm diameter, 2mm thickness

Custom Sizes Available: For custom diameters, thicknesses or special wavelength requirements, please contact our sales team directly for personalized solutions.

Detailed Technical Specifications

Package Contents

• 1 x Selected CVD ZnSe CO₂ Laser Beam Combiner
• 1 x Hard Protective Storage Case
• 1 x Lint-free Microfiber Cleaning Cloth
• 1 x Sealed Anti-static Aluminum Foil Packaging

Quality Assurance

All CO₂ laser beam combiners from Link Metal CNC undergo 100% optical testing before delivery, including transmittance test at 10.6μm, reflectance test at 632.8nm, surface quality inspection and dimensional accuracy verification.

We guarantee bright clear red dot alignment and >99% CO₂ laser transmittance. All our products come with professional pre-sales consultation and comprehensive technical support for any installation or usage questions.

Frequently Asked Questions

Q: What is a laser beam combiner and why do I need it?
A: A beam combiner is a special optical component that allows two different wavelengths of light to travel along the same path. In CO₂ laser systems, it transmits the invisible 10.6μm CO₂ laser beam while reflecting the visible 632.8nm red alignment laser, creating a visible red dot that shows exactly where the laser will cut or engrave.

Q: How do I install the beam combiner correctly?
A: The beam combiner must be installed at a 45° angle to both the CO₂ laser beam and the red alignment laser. The coated side should face the red laser source. Always wear clean gloves when handling optical components and avoid touching the optical surfaces.

Q: How often should I replace the beam combiner?
A: Under normal operating conditions, a beam combiner should last 6-12 months. However, it should be replaced immediately if you notice a significant decrease in red dot brightness, reduced cutting power, or if the surface becomes scratched or contaminated.

Q: Can I clean the beam combiner?
A: Yes, you can clean a slightly contaminated beam combiner using proper cleaning techniques. Use a blower ball first to remove loose dust, then gently wipe with a lint-free microfiber cloth and lens cleaning fluid. Never use regular paper towels or tissues.

Q: Can this beam combiner be used for fiber lasers?
A: No, this beam combiner is specifically designed for 10.6μm CO₂ lasers and 632.8nm red alignment lasers. It will not work for 1064nm fiber lasers. Using the wrong wavelength beam combiner will result in extremely high absorption and damage.

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