12.5mm Dia., 3mm Thick, NIR I Coated, λ/4 Fused Silica Window

Product Details Available Uncoated or BBAR Coated for UV, Visible, and NIR Ideal for Imaging Applications Circular and Rectangular Sizes from 5 to 200mm 1λ or λ/10 UV Fused Silica Windows Also Available TECHSPEC λ/4 UV Fused Silica Windows are manufactured with 40-20 surface quality and λ/4 transmitted wavefront error specifications, making them ideal for imaging applications. Featuring UV fused silica substrates, these windows provide high transmission from the ultraviolet (UV) through the visible and near-infrared (NIR). Broadband anti-reflection (BBAR) coating options are available to minimize reflection losses and increase transmission. TECHSPEC λ/4 UV Fused Silica Windows are used in optical imaging applications, in low to medium powered laser applications, and as protective windows, especially in applications requiring transmission of UV light. Specifications General Type: Protective Window Type of Window: Glass Physical & Mechanical Properties Clear Aperture CA (mm): 11.25 Diameter (mm): 12.50 +0.00/-0.10 Thickness (mm): 3.00 ±0.10 Parallelism (arcmin): <1 Bevel: Protective as needed Clear Aperture (%): 90 Edges: Fine Ground Poisson's Ratio: 0.16 Young's Modulus (GPa): 73 Knoop Hardness (kg/mm 2 ): 522.00 Optical Properties Coating: NIR I (600-1050nm) Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) Index of Refraction (n d ): 1.458 Surface Quality: 40-20 Transmitted Wavefront, P-V: λ/4 Abbe Number (v d ): 67.8 Coating Specification: R avg ≤0.5% @ 600 - 1050nm Wavelength Range (nm): 600 - 1050 Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. 7 J/cm 2 @ 1064nm, 10ns Material Properties Density (g/cm 3 ): 2.20 Coefficient of Thermal Expansion CTE (10 -6 /°C): 0.52 (+5 to +35°C) 0.57 (0 to +200°C) 0.48 (-100 to +200°C) Fused Silica Grade: 7980 0G Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × REACH 241: Compliant ×