Crystal Polarisers The basic Glan-Taylor polarising prism gives excellent extinction and high transmittance over a wide wavelength range. The form with side faces polished is useful as a polarising beamsplitter or for high powers. The high-transmittance type, also with side windows, has all four surfaces at Brewster’s angle for the transmitted beam, so reflection losses are negligible. The Wollaston polarising beamsplitter, a cemented type, deviates the two polarisation components of a beam at angles ±10 degrees from input direction, with a small chromatic dispersion. Most types are also listed mounted in flanged clevis mounts, these fit directly, for instance, into our rotating holders and Tube Mount system, whilst still allowing access to the side exit beam.
Knight Optical > Polarisers  > Crystal 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  > Crystal polarisers
Specification   Material: Calcite (CaCO3) Material Data: (see materials section) Dimensions: ±0.25mm Wavelength Range: 350-2800nm Face Flatness : λ/8
Specific requirements We can manufacture Crystal 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   · Quartz, MgF2 and other materials   · Rochon, Glan-Thompson and other designs   · Special sizes, mounts etc   · AR Coating