What are the main types of infrared transmitting optical glass?

Infrared transmission optical glass There are mainly the following categories:

(1) Infrared transmitting optical quartz glass (JGS3)

Infrared transmitting optical quartz glass (JGS3) is a good infrared transmitting optical glass with a spectral transmission range of 760~3500 nm.
(2) Infrared transmitting optical glass (HWB)

Infrared transmitting optical glass (HWB) belongs to colloidal colored optical glass, and colorants include cadmium selenide (CdSe), cadmium telluride (CdTe), manganese oxide MnO,), antimony selenide (Sb, Se), etc. Infrared transmitting optical glass (HWB) is a kind of matrix optical glass (such as NaO CaO SiO, system optical glass) in which a small amount of colorant is added. After melting and heat treatment, the colorant ions in the optical glass gather and precipitate micro colloidal particles, so that the optical glass has similar light absorption characteristics to the crystal.
(3) Infrared transmitting sulfide optical glass
Another type of infrared transmitting optical glass is sulfide glass, such as arsenic disulfide (ASS) glass. Any oxide optical glass is opaque to infrared rays with wavelength greater than 6um, while the spectral range of arsenic disulfide (ASS,) optical glass is 0.6~11.5um.
(4) High silicon oxygen transmission infrared optical glass
The content of silicon dioxide (SiO2) in high silica optical glass is more than 95%, and its performance is close to that of optical quartz glass, but its melting temperature is far lower than that of optical quartz glass, so the cost can be greatly reduced.
In addition, infrared transparent ceramics (aluminum oxide (ALO) ceramics, magnesium oxide (MgO) ceramics and rare metal oxide ceramics), optical objects (such as sodium carbide (NaC) optical crystals) and semiconductor materials (Si) are also used as infrared transmitting materials.