Potassium Bromide is one of the most useful materials for general purpose spectroscopic windows and applications where sensitivity to moisture is unimportant. Potassium Bromide is the most commonly used beamsplitter material for IR spectrophotometers.
Specifications
Transmission Range
0.23 to 25 μm
Reflection Loss
8.3% at 10 μm
Absorption Coefficient
3 x 10-6 @ 1064nm : 14 x 10-6 cm-1 @ 10.6 (7)
Refractive Index
1.527 at 10 μm (1)
Melting Point
730 °C
Hardness
Knoop 7 in <100> with 200g indenter (4)
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