Fluorides

Standard substrates

Fluorides have a very broad transmission range from VUV to FIR. They must be chosen especially if the coating materials will also be fluorides, like often used in the VUV/UV or in the MIR/ FIR. The main materials are MgF2 and CaF2.

MgF2

Transmission curve of Magnesium Fluoride
Transmission curve of Magnesium Fluoride

CaF2

Transmission curve of Calcium Fluoride
Transmission curve of Calcium Fluoride