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Plate Beamsplitters - General-Purpose Grade - Visible 50/50 - Diameters

Our general purpose plate beamsplitters are for use at 45° and are available for both visible and near IR applications. They have a multilayer broad band AR coating on the rear to eliminate ghosting effects and are made from standard white float glass that has a relatively good grade of flatness and surface quality. We stock 50/50 plate beamsplitters for visible applications. The stock listed below are circular general purpose beamsplitters of various diameters and thicknesses.

Specifications:

Material:	White Float Glass, B270 (for NIR range)
Diameter:	+0 / -0.2mm
Length / Width:	± 0.3 mm (<100mm) ± 0.5 mm (>100mm)
Thickness:	± 0.2 mm
Surface Quality:	<60:40 scratch/dig
Flatness (typical): 1mm thick 3mm thick	0.5-1.5 λ/10mm dia 1-2 λ/25mm dia
Parallel:	<30 arcsec
Beamsplitter Coating:	Visible 50% NIR 50% Visible 33/67%
AR Coating On Rear:	Visible: BBAR Ravg 0.5% @450-900nm (AV2) NIR: BBAR Ravg 0.4% @630-1100nm (AI1)
Polarisation Ratio:	Rs/Rp = 2 (approx. for all types)