9754245

Transmitted wavefront distortion, PV: <λ/10 @ 632.8 nm
Wavelength, nm: 257
Surface quality, S-D: 20-10
Retardation: λ/4
Retardation tolerance: λ/300 @ 20 °C
Retardation order: Zero order
Mount: Ø25.4 x 6 mm non-anodized aluminium mount
Material: Crystalline Quartz
LIDT: >10 J/cm² for 10 ns pulses @ 1064 nm
Configuration: Air spaced (with glass spacer)
Configuration: Air spaced
Clear Aperture: >18
AR coatings: R<0.5% @ 257 nm on each surface
Parallelism error: <3 arcsec