40mm Dia., 3mm Thick, Uncoated Magnesium Fluoride Window

Product Details Excellent Transmission from 120nm to 7μm Rugged and Durable Resistant to Chemical Etching TECHSPEC Magnesium Fluoride (MgF 2 ) Windows offer excellent broadband transmission from the deep-UV to the mid-infrared. DUV transmission makes them ideal for use at the Hydrogen Lyman-alpha line and for UV radiation sources and receivers, as well as excimer laser applications. MgF 2 is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock. TECHSPEC Magnesium Fluoride (MgF 2 ) Windows have a Knoop Hardness of 415 and index of refraction of 1.38. The windows are offered in diameters ranging from 3.2 to 100mm. Note: Windows are available in both random and c-cut axis orientations. Specifications General Type: Protective Window Type of Window: Crystal Physical & Mechanical Properties Clear Aperture CA (mm): 36.00 Diameter (mm): 40.00 +0.0/-0.1 Thickness (mm): 3.00 ±0.1 Parallelism (arcmin): <1 Bevel: Protective as needed Clear Aperture (%): 90 Edges: Fine Ground Poisson's Ratio: 0.27 Young's Modulus (GPa): 138 Knoop Hardness (kg/mm 2 ): 415.00 Optical Properties Coating: Uncoated Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Magnesium Fluoride (MgF 2 ) Index of Refraction (n d ): 1.377 Surface Quality: 40-20 Abbe Number (v d ): 106.22 Axis Orientation: Random Wavelength Range (nm): 120 - 7000 Surface Flatness (P-V): λ/2 Material Properties Density (g/cm 3 ): 3.18 Coefficient of Thermal Expansion CTE (10 -6 /°C): 13.7 Regulatory Compliance Certificate of Conformance: View ×