50.8mm Dia., 4mm Thick, Uncoated, ISP Optics Magnesium Fluoride (MgF 2 ) Window | MF-W-50-4

Product Details Excellent Transmission from 0.12 to 7μm Rugged and Durable Resistant to Chemical Etching ISP Optics Magnesium Fluoride (MgF 2 ) Windows feature a low refractive index and high transmission from the Deep UV (DUV) to the Mid-Wave Infrared (MWIR), without the need for an Anti-Reflection (AR) coating. Magnesium Fluoride is extremely durable, being resistant to mechanical and thermal shock. Featuring strong resistance to chemical etching and stability in water, these windows are able to be used in harsh external environments. ISP Optics Magnesium Fluoride (MgF 2 ) Windows are ideal for a wide range of applications from use in the DUV for Hydrogen Lyman-alpha line applications and excimer laser applications, to applications requiring transparency across multiple wavelengths such as spectroscopy and fluorescence imaging. Specifications General Model Number: MF-W-50-4 Type: Protective Window Type of Window: Crystal Physical & Mechanical Properties Clear Aperture CA (mm): 43.18 Diameter (mm): 50.80 +0.00/-0.13 Thickness (mm): 4.00 ±0.13 Parallelism (arcmin): <3 Bevel: Protective as needed Clear Aperture (%): 85 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 Wavelength Range (nm): 120 - 7000 Surface Flatness (P-V): 2λ Material Properties Density (g/cm 3 ): 3.18 Coefficient of Thermal Expansion CTE (10 -6 /°C): 13.7 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×