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| Specification | Value |
| Transmission Band 1 | Tavg > 90% 261 – 560.8 nm |
| Edge Wavelength 1 | 251.1 nm |
| Blocking Band 1 | ODabs > 6 248.6 nm |
| Blocking Band 2 | ODavg > 6 202 – 248.6 nm (typical) |
| Transition Width (nm) | 5 nm |
| Transition Width (cm-1) | 805 cm-1 |
| Edge Steepness (%) | 0.8% |
| Edge Steepness (nm) | 2.0 nm |
| Edge Steepness (cm-1) | 319.2 cm-1 |
| Specification | Value |
| Laser Wavelength 1 | 248.6 nm |
| Angle of Incidence | 0 ± 2 degrees |
| Cone Half-angle | 5 degrees |
| Optical Damage Rating | 0.5 J/cm2 @ 266 nm (10 ns pulse width), 1 J/cm2 @ 532 nm (10 ns pulse width) |
| Effective Index | 2.24 |
| Specification | Value |
| Transverse Dimensions (Diameter) | 25 mm |
| Transverse Tolerance (mounted) | + 0.0 / – 0.1 mm |
| Filter Thickness (Mounted) | 3.5 mm |
| Filter Thickness Tolerance (Mounted) | ± 0.1 mm |
| Clear Aperture | ≥ 22 mm |
| Scratch-Dig | 60-40 |
| Substrate Type | Fused Silica |
| Substrate Thickness (unmounted) | 2.0 mm |
| Substrate Thickness Tolerance (unmounted) | ± 0.1 mm |
| Orientation | Arrow on ring indicates preferred direction of propagation of light |
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