Cube Polarisers Polarising beamsplitter cubes conveniently divide any beam into two polarised components. They also make excellent variable beamsplitters, particularly for sources such as lasers with polarised output, used with a half-wave plate to vary the incident polarisation state. This arrangement allows continuous variation of the split ration over a wide range with negligible losses. We offer cubes for both with multiplayer AR coatings for maximum efficiency. Note that the polarisation purity of the transmitted beam is considerably better than the reflected beam. For even better performance see crystal polarisers. Cubes are also listed mounted in a flanged clevis mount to fit directly into our rotating holders, Tube Mount cells and similar mounts, whilst still allowing access to the reflected beam.
Knight Optical > Polarisers  > Cube polarisers Unmounted This is the section containing Unmounted. In 25mm dia mount This is the section containing In 25mm dia mount. Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! Knight Optical > Polarisers  > Cube polarisers
Specification   Material: SF15 (699301) Material Data: (see materials section) Dimensions: ±0.25mm Wavelength Range:     Visible: 450-700nm   NIR: 700-1064nm Tp: Typ. 97% (Click here for graph) Ts: 0.2% max Rp: Typ. 3% (1-Tp) Rs: >99%
Specific requirements We can manufacture Cube polarisers to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Mounting (circles up to 50mm dia.)   · AR coating   · Edging to smaller diameters See also Cube Beamsplitters