Specifications:

Material: Silicon (Si) Single Crystal
Diameter Tolerances: +.000” -.005”
Thickness: ±.010”
Flatness: 1/40 wavelength
Parallelism: < 3 minutes of arc
Surface Quality: < 40/20 scratch dig Laser Finish

Spectral Performance:

Phase Shift: 90° ± 3.0° between P and S polarization
for 9.3-9.4µm operation only @ 45° Angle Of Incidence
Reflectance: > 99.0% average @ 9.3-9.4µm
Absorption: < .50% @ 9.3-9.4µm
Coating optimized to create 90° phase shift from
a linear polarized beam. Used in beam delivery
systems where cutting circles in materials is required.