UV Grade Fused Silica

10 J/cm² @ 20 ns pulses, 20 Hz at 1064 nm, typical

+0/-0.13 mm

±38 mm

λ/10 @632.8 nm over the clear aperture

15-5 scratch-dig

Central 80% of diameter

10Q20: 0.25-0.76 mm face width
20Q20: 0.38-1.14 mm face width

45° ±15°

30 ±15 arc min

See How to Clean Optics