9539963

Acceptance angle: 11.37°
Clear aperture: >18 mm
Coatings: AR (R<0.2 %) on each surface
Engrave: TFO λ/4 @ 780 nm
LIDT: >20 J/cm2 @1064nm, 10ns pulses, 10Hz
Material: Crystalline quartz or MgF2
Mount: Mounted with NOA88 glue in Ø25.4x 6 mm black anodized metal mount
Parallelism error: <3 arcsec
Retardation: λ/4 +/- λ/300 @ 20 °C
Surface quality: 20-10 S-D
Transmitted wavefront distortion, PV: <λ/10 @ 632.8 nm
Wavelength, nm: 780 nm
Retardation order: 1st