ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
Materials>>CaF2 >>CaF2 transmission

How to choose most suitable CaF2 grade for my application?

Alkor Technologies manufactures custom Calcium Fluoride optical components for Ultraviolet and Infrared applications. Please refer to a table to check which grade is suitable for your application.

λ, micron Transmission(%), not less. 10mm thickness sample
Excimer CaF2 VUV CaF2 UV CaF2 IR CaF2
0.125 50 <=50 - -
0.130 65 55 - -
0.155 79 70 <=40 <=40
0.193 85 80 80 70
0.260 87 87 87 87
0.4 90 90 90 90
3.0 94
6.5 94
7.0 92% T=10mm; 94% T=1.0mm; 94% T=0.5mm
8.0 80% T=10mm; 92% T=1.0mm; 94% T=0.5mm
9.0 50% T=10mm; 87% T=1.0mm; 93% T=0.5mm
10.0 15% T=10mm; 75% T=1mm; 85% - T=0.5mm
11.0 0.0% T=10mm; 50% T=1mm; 70% T=0.5mm
12.0 0.0% T=10mm; 25% T=1mm; 50% T=0.5mm

Excimer grade CaF2 is most expensive; IR grade is very cheap and most popular CaF2 grade for large number of IR applications.