9 inch silicon CO2 laser mirror

Product Description

9″ Diameter Custom Concave Silicon CO₂ Laser Dual-Wavelength Total Reflector – II-VI Incorporated

This is a rare, custom-engineered high-power CO₂ laser resonator mirror manufactured by II-VI Incorporated (now Coherent), a global leader in infrared optics. Featuring a single-crystal silicon substrate and a proprietary DJES dual-wavelength dielectric-enhanced coating, this concave mirror is optimized for simultaneous high reflectivity at 10.6 µm and 11.15 µm—making it ideal for specialized dual-line or multi-isotope CO₂ laser systems. With a substantial 9-inch diameter and a long radius of curvature (ROC), it is designed for stable, large-mode-volume resonators in industrial and scientific applications.

Key Specifications:

• Diameter: 9.0″ (228.6 mm)

• Thickness: 2.36″ (60 mm) – robust thermal mass

• Substrate: Single-crystal silicon (Si) – excellent thermal conductivity, low absorption at 10+ µm

• Surface 1 (S1):

  • Concave with Radius of Curvature (ROC) = 242 inches (~6.15 m)

  • DJES dual-wavelength dielectric coating – high reflectivity at 10.6 µm & 11.15 µm

• Surface 2 (S2): Fine ground (FG) – uncoated, scatter finish

• Condition: Excellent surplus – S1 coating pristine; structurally sound

Why This Mirror Is Exceptional:

• Dual-Wavelength Capability: Simultaneously optimized for standard 10.6 µm and specialized 11.15 µm CO₂ laser lines—a rare and valuable feature.

• Industrial-Grade Construction: Massive silicon substrate and thick design handle multi-kilowatt power levels with minimal thermal distortion.

Applications:

• High-Power CO₂ Laser Resonators: Total reflector for industrial cutting, welding, or drilling systems (>1 kW).

• Scientific & Research Lasers: For dual-line or isotope-stabilized CO₂ lasers in physics and chemistry labs.

• Long-Cavity Designs: The 242″ ROC supports stable, large-mode-volume resonators for superior beam quality.

• Laser System Upgrades: Direct replacement or enhancement for existing II-VI or compatible CO₂ laser cavities.