Materials>>KBr

POTASSIUM BROMIDE (KBr)

KBr transmission

Potassium Bromide is used for windows and prisms when transmission through the range 0.25mkm to 26mkm is desired. Potassium Bromide is water soluble and must be protected aginst moisture degradation of polished surfaces.

The material cleaves readily, and can be used at temperatures up to 300C. Irradiation of Potassium Bromide produces color centers.

Alkor Technologies manufactures KBr optical components: KBr windows, KBr wedges, KBr beamsplitters and KBr blanks according to customer's specifications.

The largest dimensions of KBr optics : Dia140 mmx50 mm Thk. Please contact us for more information.

Main properties:

Chemical Formula : KBr
Crystal Structure : Cubic
Lattice Constant, A : 6.60
Density, g/cm3 : 2.75
Knopp Hardness : 5.9(110), 7.0(100)
Transmission band: 0.23 - 25 mkm

Refractive Index

Wavelength, µm

0.39

0.44

0.49

0.59

0.80

1.50

8.50

12.0

17.0

18.1

20.5

22.0

23.9

25.2

Refractive Index

1.59

1.58

1.57

1.56

1.55

1.54

1.53

1.52

1.51

1.50

1.49

1.48

1.47

1.46