100mm ZnSe window CO₂ laser

Product Description

Large 100mm AR-Coated Zinc Selenide (ZnSe) Window for CO₂ Lasers – Defense Surplus

This is a high-performance, transmissive optic crafted from premium Zinc Selenide (ZnSe)—the industry standard material for high-power CO₂ laser systems operating at 10.6 µm. Sourced from U.S. Defense laboratory surplus, this large-format, AR-coated window offers professional-grade infrared transmission at a fraction of its original cost.

Key Specifications:

• Material: High-purity Zinc Selenide (ZnSe) crystalline substrate

• Diameter: 100 mm (≈4 inches)

• Thickness: 8 mm (provides thermal stability and high laser damage threshold)

• Coating: Dual-side Broadband Anti-Reflection (AR) – optimized for 10.6 µm (<0.5% loss per surface typical)

• Figure: Plano-Plano (flat, parallel surfaces)

• Spectral Range: Excellent transmission in Mid/Far-IR (2–14 µm); naturally blocks visible/blue light (longpass filter effect)

Why This ZnSe Window Is Exceptional Value:

• Cost Savings: New equivalents retail for $1,500–$3,000+. This surplus optic delivers identical performance.

• Proven Durability: Originates from U.S. Defense laser R&D, built to withstand demanding high-power applications.

• Large Format: 100mm diameter provides generous beam clearance for industrial and hobbyist CO₂ laser setups.

Applications:

• CO₂ Laser Systems: Protective output window, debris shield, or beam diagnostics in cutters, engravers, and markers.

• Industrial/Research Optics: Component in high-power IR beam delivery, sensor windows, or thermal imaging systems.

• Hobbyist & DIY Upgrades: Perfect for enhancing homebuilt CO₂ laser cutters (e.g., K40 machines).

• Spectroscopy & Sensing: Window for FTIR or other mid/far-infrared analytical instruments.