Chalcogenide Glass Window, IRG22, 25.4mm Dia. 3mm Thick

Product Details SCHOTT IRG Infrared Glasses Lightweight with Broad Transmission Bands in the SWIR, MWIR, and LWIR Spectra Ideal Alternative to Germanium SCHOTT Chalcogenide Glass Windows are suitable for a large range of IR applications and are an ideal alternative to Germanium substrates. Available in 5 different glass types optimized for excellent transmission in the NIR-LWIR ranges, these windows feature low dn/dt and dispersion with high color correction. Low density, coefficient of thermal expansion, and chemical resistance make them a great choice for low SWaP applications and harsh environments with changing temperatures. SCHOTT Chalcogenide Glass Windows are available in a variety of diameters and thicknesses. These windows are ideal for ideal for thermal imaging, spectroscopy, and sensing applications. Note: Gloves must be worn while handling all IRG materials. IRG27 is a toxic material that can be absorbed through the skin. For all IRG materials, care should be taken when handling as these materials are soft and susceptible to scratches. These materials should be stored in a low humidity environment and extended exposure to UV light should be avoided to avoid the development of haziness on the surface of the optic. Contact with high temperatures or strong acids or bases should be avoided. IRG22 – Offers excellent transmission in the NIR range. Chemical Formula Ge 33 As 12 Se 55 IRG24 – Offers a low coefficient of thermal expansion for heat-sensitive applications. Chemical Formula Ge 10 As 40 Se 50 IRG25 – Offers excellent SWIR, MWIR, and LWIR transmission. Chemical Formula Ge 28 Sb 12 Se 60 IRG26 – Offers an exceptionally broad transmission range, with minimal absorption at 12.5um. Germanium Free. Chemical Formula As 40 Se 60 IRG27 – Combines a high SWIR/MWIR transmission with a low coefficient of thermal expansion. Germanium Free. Chemical Formula As 2 S 3 Specifications General Type: IR Window Note: Delivered in vacuum-sealed packaging Physical & Mechanical Properties Diameter (mm): 25.40 ± 0.1 Thickness (mm): 3.00 ± 0.1 Bevel: Protective as needed Edges: Polished Young’s Modulus (GPa): 21.5 Optical Properties Coating: Uncoated Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More SCHOTT IRG22 Index of Refraction (n d ): 2.5971 @ 1μm 2.5104 @ 5μm 2.4968 @ 10μm Surface Quality: 60-40 Wavelength Range (nm): 1000 – 14000 Surface Flatness (P-V): <5 λ P-V @ 632.8 Material Properties Density (g/cm 3 ): 4.41 Transformation Temperature (°C): 368 Coefficient of Thermal Expansion CTE (10 -6 /°C): 12.5 x 10 –6 /K (20 - 100°C) Composition: Ge33As12Se55 Regulatory Compliance Certificate of Conformance: View ×