Reflective Phase Retarders

Reflective Phase Retarders


Metal cutting and other critical laser operations are sensitive to any variation in kerfwidth or cross-section. The kerf’s quality depends on the polarization orientation relativeto the cut direction.

Circular polarization consists of equal amounts of s-polarization and p-polarization for anybeam orientation, therefore all axes encounter the same composition of polarization, andmaterial is removed uniformly regardless of cut direction.

Capability

Common Specification
Material  Silicon
Dimension tolerance ± 0.10 mm
Diameter tolerance +0/-0.1mm
Thickness tolerance ± 0.20 mm
Clear Aperture >90%
Part Number Material Diameter (mm) Thickness (mm) Phase Shift@ 10.6μm
RPR-SI-D38.1-4.0T Silicon 38.1 4.0 90±6deg
RPR-SI-D50.8-5.0T Silicon 50.8 5.0 90±6deg
RPR-SI-D50.8-10.0T Silicon 50.8 10.0 90±6deg
RPR-SI-D76.2-6.0T Silicon 76.2 6.0 90±6deg