Infrared material transmittance, infrared transmittance curve of zinc selenide, silicon, sapphire and zinc germanium
2024-07-04 17:08
Infrared optical materials are widely used in medical, biological, industrial and other fields. Representative materials include Si, Ge, ZnSe, ZnS, etc. These materials have good transmittance in the infrared band and can be used as excellent window materials. Infrared products for infrared optical systems are also emerging in an endless stream, such as infrared detectors, infrared cameras, thermal imagers, infrared spectrometers, infrared lasers, infrared wave plates, etc. Infrared materials are developing rapidly in various scientific research applications and industrial production processes. Taking Holoor's diffractive optical elements as an example, DOE materials in the infrared band use sapphire, silicon (Si) and zinc selenide (ZnSe). Haina Optics' own brand of microlenses will use silicon (Si) and germanium (Ge) in the infrared band. Compared with zinc selenide, silicon and germanium have no toxicity in the production process, better processing, and lower cost. The disadvantage is that they are not transparent to visible light. Zinc sulfide (ZnS), as a new generation of high-temperature resistant infrared materials, has been increasingly used in the hypersonic field with its excellent high-temperature radiation performance and thermal shock resistance; large-size ZnS and ZnSe have also become key optical materials in large-aperture optical systems.