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Alkor Technologies manufactures optical components made of the Infrared materials, crystals and Fused Silica. Our materials cover the entire spectral range from the UV through Far Infrared.
| Crystal |
Transm. band, µm |
Refraction index (nd) |
Abbe no. (vd) |
Density (g/cm3) |
Softening T, °Ñ |
Knoop Hardness |
Max. Dia, mm |
| BaF2 |
0.2-10 |
1.474 |
|
4.89 |
1550 |
82 |
220 |
| KBr |
0.25-20 |
1.527 |
33.6 |
2.75 |
730 |
7 |
101.6 |
| Fused Silica |
0.2-3 |
1.458 |
67.7 |
2.21 |
1000 |
500 |
300 |
| CaF2 |
0.15-10 |
1.434 |
95.1 |
3.18 |
800 |
158.3 |
220 |
| NaCl |
0.3-15 |
1.491 |
42.9 |
2.17 |
801 |
18.2 |
200 |
| MgF2 |
0.12-7 |
1.413 |
106.2 |
3.18 |
1255 |
415 |
50.8 |
| LiF |
0.12-5 |
1.391 |
|
3.18 |
867 |
100 |
76.2 |
| ZnSe |
0.6-20 |
2.403 |
N/A |
5.27 |
250 |
120 |
80 |
| Silicon |
1.2-8 |
3.422 |
N/A |
2.33 |
1500 |
1150 |
140 |
| Germanium |
2-16 |
4.003 |
N/A |
5.32 |
936 |
780 |
180 |
| Sapphire |
0.3-4 |
1.768 |
72.2 |
3.98 |
2273 |
2200 |
200 |
| KCl |
0.3-18 |
1.49 |
|
1.98 |
776 |
7.2 |
200 |
| Optical glasses |
visible |
|
|
|
|
|
300 |
Alkor Technologies provides a range of high quality custom infrared optical components specifically suited to infrared wavelengths for a host of IR applications. A range of materials are available for use from 2.6µm to 45µm, however some materials such as Lithium Fluoride, Calcium Fluoride and Magnesium Fluoride work efficiently in deep UV and other materials such as low OH IR fused quartz is also suited to visible and NIR spectrums.
Our high quality Infrared optical components that are available as custom solutions include windows, prisms, spherical, meniscus and diamond turned lenses and ground blanks. We also provide custom solutions for a range of IR optical filters, IR polarisers, IR beamsplitters and IR gas cells.
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Size tolerance,mm |
Parallelism |
Flatness |
Surface quality |
| Standard |
+0.0/-0.1 |
3 arc. min |
1 lambda at 0.63µm |
60/40 |
| Achievable |
+0.0/-0.02 |
10 arc.sec |
Lambda/10 at 0.63 µm |
10/5 |
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