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.