38.1mm Dia., 266nm, λ/10 Ultra-Low Reflectivity Window

Product Details <0.1% Reflectivity Laser Line Coatings Nd:YAG and Yb:YAG Wavelength Options Reduce Typical Laser System Losses by 3% (Compared to a 0.25% Specified System with 10 Transmissive Optics) Increased Transmission Reduces Back Reflections, Ghost Images, and Stray Light TECHSPEC λ/10 Ultra-Low Reflectivity Windows feature anti-reflection coatings with reflection lower than 0.1% at the design wavelength. These windows feature high quality fused silica substrates with λ/10 surface flatness and 10-5 surface quality to minimize scatter. With ultra-low reflectivity and high damage thresholds, these windows are ideal for integration into laser systems to virtually eliminate surface reflections. TECHSPEC λ/10 Ultra-Low Reflectivity Windows are available in a range of laser V-Coats from 266nm to 1064nm for compatibility with Nd:YAG and Yb:YAG laser sources. Imperial diameter sizes from 12.7mm to 50.8mm are available. Specifications General Type: Laser Line Window Physical & Mechanical Properties Clear Aperture CA (mm): 34.29 Diameter (mm): 38.10 +0.00/-0.10 Thickness (mm): 6.35 ±0.20 Parallelism (arcmin): <3 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 Angle of Incidence (°): 0 Coating: Laser Ultra V-Coat (266nm) Design Wavelength DWL (nm): 266 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: 10-5 Abbe Number (v d ): 67.8 Coating Specification: R abs <0.10% @ 266nm Surface Flatness (P-V): λ/10 Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. 3 J/cm 2 @ 266nm, 20ns, 20Hz 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 0F Regulatory Compliance RoHS 2015: Compliant × Reach 219: Compliant × Certificate of Conformance: View ×