General Optics

Beamsplitter Cubes

Split and recombine laser beams or broadband sources with these beamsplitter cubes that offer both polarization insensitivity and high throughput.

Coherent non-polarizing beamsplitter cubes use a metallic–dielectric coating that maintains transmission and reflection of the s- and p-polarization states to within 5% of each other, thus minimizing the polarization sensitivity of an optical system.

Beamsplitter Cube Capabilities

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

Typical 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

Ts = Tp = 50%±5%

Reflection

Rs = Rp 50%±5%

Coating

Non-polarizing beamsplitter coating on the hypotenuse 

Optional AR coating on input/output faces