
| Material | UV Fused Silica | 
| Transmitted Wavefront error | λ/ 4 @ 633 nm | 
| Parallelism | <30 arcsec | 
| Surface Quality | 40-10 | 
| Diameter Tolerance | 0.0/-0.1mm | 
| Thickness | 2mm ±0.2mm | 
| Central Wavelength (λC)Tolerance | ±1% | 
| TransmissionTavg | >90% | 
| Blocking Depth | OD2 | 
| Blocking Slope | <1% | 
| CA | >90% | 
| Angle of Incidence | 0° |