Cesium Iodide (CsI) Windows

Cesium Iodide (CsI) Windows are engineered to deliver exceptional broadband transmission, offering reliable performance from the ultraviolet through the far infrared spectrum. Their wide transmission range, extending from approximately 0.25µm to 55µm, makes them well suited for spectroscopy and advanced IR sensing applications. The Cesium Iodide (CsI) substrate features a relatively low refractive index, helping to minimize surface reflection losses and improve overall system efficiency. Cesium Iodide (CsI) Windows also exhibit good resistance to thermal shock, enabling stable operation in environments with rapid temperature changes. This combination of broad spectral coverage and dependable performance makes CsI Windows a strong choice for demanding optical and analytical systems.

Note: CsI is an extremely soft and fragile material that is difficult to polish. Care should be taken when handling to avoid damage to the surface, and gloves should be worn as skin contact can cause irritation.  CsI is also hygroscopic and should be stored in a low-humidity environment, avoiding contact with moisture.