SCHOTT Chalcogenide Window Substrates

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 standard 25.4mm diameter and a 3mm thickness. These windows are ideal for ideal for thermal imaging, spectroscopy, and sensing applications.

• IRG22 – Offers excellent transmission in the NIR range. Chemical Formula Ge₃₃As₁₂Se₅₅
• IRG24 – Offers a low coefficient of thermal expansion for heat-sensitive applications. Chemical Formula Ge₁₀As₄₀Se₅₀
• IRG25 – Offers excellent SWIR, MWIR, and LWIR transmission. Chemical Formula Ge₂₈Sb₁₂Se₆₀
• IRG26 – Offers an exceptionally broad transmission range, with minimal absorption at 12.5um. Germanium Free. Chemical Formula As₄₀Se₆₀
• IRG27 – Combines a high SWIR/MWIR transmission with a low coefficient of thermal expansion. Germanium Free. Chemical Formula As₂S₃