25.4mm Dia., 3mm Thick, Uncoated, ISP Optics Potassium Bromide (KBr) Window | KB-W-25-3

Product Details Excellent Transmission from 0.25 – 26μm Good Resistance to Mechanical Shock Ideal for FTIR Spectroscopy ISP Optics Potassium Bromide (KBr) Windows feature excellent transmission across a broad wavelength range from the Deep UV (DUV) to the Long-Wave Infrared (LWIR). These windows are highly resistant to mechanical shock, can be easily cleaved, and can be used in temperatures up to 300°C. Potassium Bromide is water soluble and it should be protected from exposure to moisture and high humidity as it will degrade the surface of the window. ISP Optics Potassium Bromide (KBr) Windows can be used for a wide range of applications in the UV, Visible, MWIR, and LWIR spectra, but is particularly useful for Fourier Transform Infrared (FTIR) spectroscopy. Note: Potassium Bromide (KBr) is water soluble and must be protected from humid or wet environments. Specifications General Model Number: KB-W-25-3 Type: Protective Window Type of Window: Crystal Physical & Mechanical Properties Clear Aperture CA (mm): 21.59 Diameter (mm): 25.40 +0.00/-0.13 Thickness (mm): 3.00 ±0.13 Parallelism (arcmin): <3 Bevel: Protective as needed Clear Aperture (%): 85 Edges: Fine Ground Poisson's Ratio: 0.20 Young's Modulus (GPa): 26.8 Knoop Hardness (kg/mm 2 ): 7.00 Optical Properties Coating: Uncoated Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Potassium Bromide (KBr) Index of Refraction (n d ): 1.56 Surface Quality: 60-40 Abbe Number (v d ): 33.64 Wavelength Range (nm): 250 - 26000 Surface Flatness (P-V): λ/10 @ 10.6μ Material Properties Density (g/cm 3 ): 2.753 Coefficient of Thermal Expansion CTE (10 -6 /°C): 43 Solubility, in 100g of H 2 O @ 273K (g): 53.48 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×