Silicon (Si) Monocrystalline silicon is a chemically inert material with high hardness and insoluble in water. It has good light
transmission performance in the 1-7μm band. At the same time, it also has good light transmission performance in the far infrared
band of 300-300 μm, which is a special feature that other optical infrared materials do not have point. Silicon (Si) single
crystal is usually used for substrates of 3-5 μm medium-wave infrared optical windows and optical filters. Due to its good thermal
conductivity, Low density, it is also a common material for making laser mirrors.
