25.4 mm

UV Grade Fused Silica

V-coat AR, R <0.25% at transmittance band

45°

R_avg > 99.5%

T_avg>95%

≤/4 at 632.8 nm over the clear aperture

5.0 MW/cm² CW, 5.0 J/cm² with 0.1-100 nsec pulses @ 1064 nm, typical

λ/10 at 632.8 nm over the clear aperture

10-5 scratch-dig

+0/-0.25 mm

6.35 mm

±0.5 mm

≤3 arc min

> central 80% of diameter

0.25-0.76 mm face width

45° ±15°

MIL-C-675C, moderate abrasion million cycles

See How to Clean Optics