BEAMSPLITTER PRISM CUBES
OFR manufactures Prism Cube beamsplitters using our AD-series Prisms (BK7 glass) with appropriate coatings. The four outer surfaces are coated with our Broadband Multilayer Antireflection Coating with per surface reflectance of 0.5%. The interface between the prisms is a dielectric, achromatic beamsplitter coating which produces a 50/50 split ± 5% across the visible spectrum when used with unpolarized light. With P-polarized light the ratio of R/T is 30/70, and with S-polarized, 70/30, approximately.

With grade A glass and all dielectric coatings, the insertion loss is negligible. However, because the prisms are cemented together, use with high-power lasers should be avoided because it may burn the cement.

For our POLARIZING BEAMSPLITTERS, please see.

Part Number A (mm) All Faces SCL-15 15.0 ± 0.1 λ/10 SCL-25 25.4 ± 0.1 λ/10

POLARIZING BEAMSPLITTERS
Our prism-cube Polarizing Beamsplitters consist of our AD-Series right-angle prisms cemented together with dielectric coatings on all surfaces. Because these are cemented, they cannot be used with high-energy lasers which may damage the cemented interface. The p-polarized component is transmitted and the s-polarized is reflected at 90°. Extinction ratio of the transmitted p-component and reflected s-component is >2000:1.