General Optics

Polarizing Beamsplitter Cubes

Split high-power laser beams by polarization using these efficient cube beamsplitters with extinction ratios >1000:1, which do not produce offset ghost beams.

These cube beamsplitters are assembled from two right-angle prisms, with a high-efficiency, all-dielectric polarization coating on the hypotenuse of one. They are ideal for use with pulsed and other high-power lasers, and for telecom applications.

Polarizing Beamsplitter Cube Capabilities

Choose size, wavelength range, and anti-reflection coating options to meet your exact requirements.

Typical Polarizing Cube Beamsplitter Specifications

Material

N-BK7 or fused silica

Flatness

λ/4 @ 632.8 nm

Surface Quality

40–20

Beam Deviation

<3 arc minute

Incidence Angle

0°±3°

Transmission

Tp > 95%, Ts < 1%

Reflection

Rs > 99%, Rp < 5%

Coating

Polarizing beamsplitter coating on hypotenuse 

Broadband or laser line AR coating on input/output faces