| Material | Crystal Quartz |
| Dimension tolerance | +0/-0.2mm |
| Thickness tolerance | ±0.005mm |
| Surface quality | 20/10 scratch and dig |
| Clear aperture | >90% |
| Wavefront distortion | <λ/8@632.8nm |
| Parallelism | <5 arc seconds |
| Thickness | T=0.5mm, 1mm, 1.5mm, 2.0mm |
| Coating | No |
| Part Number | Material | Dimension (mm) | Thickness (mm) |
| LYF12-0.5 | Crystal Quartz | 12.7 | 0.5 |
| LYF12-1 | Crystal Quartz | 12.7 | 1 |
| YF12-2 | Crystal Quartz | 12.7 | 2 |
| YF12-4 | Crystal Quartz | 12.7 | 4 |
| LYF25-0.5 | Crystal Quartz | 25.4 | 0.5 |
| LYF25-1 | Crystal Quartz | 25.4 | 1 |
| YF25-2 | Crystal Quartz | 25.4 | 2 |
| YF25-4 | Crystal Quartz | 25.4 | 4 |
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