Plate beamsplitters-general-purpose grade (λ/4) These General-purpose Beamsplitters are considerably lighter and cheaper than traditional cube beamsplitters. And avoid problems with stray back reflected light from entry and exit faces. These General-purpose Beamsplitters are available for use in Visible and Infrared wavelengths. General-purpose grade Beamsplitters are also available in 50/50 or 70/30 ratios. These General-purpose Beamsplitters have ion-plated dielectric multilayer coatings giving excellent durability and neutrality and are much less affected by temperature changes than ordinary coatings. The back of the Beamsplitters are multilayer AR coated to almost eliminate the spurious reflection. They come in two thicknesses, 1mm for compactness, and 3mm thick float glass, which is less fragile. B270 glass is used for the IR-range to avoid the strong IR absorption of float glass. Typical usage is in laser applications.
Knight Optical > Beamsplitters > Plate beamsplitters - General-purpose grade > NIR 50/50 Diameter This is the section containing Diameter. Rectangular This is the section containing Rectangular. 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 > Beamsplitters > Plate beamsplitters - General-purpose grade > NIR 50/50
Specification   Material: B270 (NIR range) Float glass/white (others) Material Data: (see materials section) Diameter: +0 / -0.2mm Length / Width: ±0.3mm (=100mm) ±0.5mm (>100mm) Thickness: ± 0.2 mm Surface Quality: <60:40 Flatness (typical):     1mmthk 0.5-1.5λ over 10mm dia.   3mmthk 1-2λ over 25mm dia. Parallel: <1 arcmin Coating: Visible 50% (see BV06 coating spec) Visible 33% (see BV09 coating spec) NIR 50% (see BI06 coating spec) Polarisation Ratio: Rs/Rp = 2 (approx. for all types)
Specific requirements We manufacture Plate beamsplitters 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   · Cutting down or edged to special sizes Beamsplitters for 1070-2000nm Available at short notice from stock material, please enquire. See also Metallic neutral density filters (can be used as beamsplitters) Dichroic beamsplitters Fresnel prisms and beam dividers