In General, light consists of electric and magnetic waves at right angles to one another,  appears in all possible planes relative to the source. Polarization at this point is considered random and has no preferred direction. If polarizing material is inserted, the planes in which the electromagnetic waves travel can be controlled such that only a single plane exists.  If the transmission axes (polarized planes) are parallel, the light will be transmitted. If they are perpendicular, no light will pass. By varying the angle between the transmission axes, it is possible to control the intensity of the transmitted light.

Laser polarizing Beamsplitters	Specification: Dimensions: +0, -0.1mm Beam Deviation: 5arcmin Surface quality:20-10 Coatings : AR on faces Flatness: λ/4 Asymmetry: 1° Material: BK7 Rs>99%  and Tp>95% Wavelength range(nm): 532,  632.8, 670, 780, 830, 1064, 1300, 1550, Note: Polarizing beamsplitters for other wavelengths can be produced to special order.
Broadband Polarizing Beamsplitters   Thin film polarizers for broadband use laser quality and performance 200:1 extinction ratio	Wavelength range (nm)        450nm-680nm        650nm-850nm        1300nm-1600nm
Other polarizing coatings are available  please call !