These square plane windows are polished to a laser grade finish on both sides. They are intended for transmissive use and are parallel to better than 3 arc minutes. Select a coating appropriate to your application or contact us with your special coating requirements.
| Surface Flatness: | If thickness ≤ 1.5mm : λ/4 @ 633nm If thickness > 1.5mm : λ/10 @ 633nm |
| Surface Quality: | <10/5 (both sides) |
| Wedge: | <3 arc min |
| Diameter Tolerance: | <+ 0.00 / – 0.20 mm |
| Thickness Tolerance: | <± 0.25 mm |
| Clear Aperture: | >85% of diameter |
| Bevel: | 0.3 mm (typical) x 45° |
Square Windows (SWI)
| Dimension | 0.5" Square x 0.25" t, 0.75" Square x 0.25" t, 1.0" Square x 1.5mm t, 1.0" Square x 3.0mm t, 1.0" Square x 0.25" t, 1.5" Square x 0.25" t, 40mm Square x 1.5mm t, 2.0" Square x 1.5mm t, 2.0" Square x 0.375" t |
|---|---|
| Material | UV Grade Fused Silica, BK7 Grade A |
Elliptical Windows (EW) 
