Windows are used to enable optical radiation to pass from one environment to another without allowing to environments to mix. Tydex offers plano-plano windows of round, square, rectangular and elliptical (including Brewster's) shape. Wedged parts are also available.
Specification:
| Substrate material: |
KU-1, K8 |
| Surface figure @ 633nm: |
l/10 |
| Surface quality, scr/dig: |
20/10 |
| Clear aperture: |
exceeds central 85% of dimension |
| Dimensional tolerance, mm: |
+0/–0.25 |
| Thickness tolerance, mm: |
±0.25 |
| Wedge: |
user speciefied (for axample, <=10 arc. sec., <= 5 arc. min., 30 (±5) arc.min) |
| Antiteflection coating: |
dielectric; user specified, R<=0.25% per surface (R<=0.1% is also possible on request) |
| Damage threshold, J/cm2: |
2-5, depending on coating spec. |
|
| No. |
Diameter, mm |
Thickness, mm |
| 1 |
10 |
3.175 |
| 2 |
12.7 |
6.35 |
| 3 |
12.7 |
9.525 |
| 4 |
25.4 |
6.35 |
| 5 |
25.4 |
9.525 |
| 6 |
38.1 |
6.35 |
| 7 |
50.8 |
9.525 |
|
Here are some examples of the window coatings:
Fig. 1 UV Fused Silica plano window, AR/AR (R <= 0.25%) @ 266nm.
Fig. 2 K8 plano window, AR/AR (R <= 0.2%) @ 532nm.
