Non-Polarizing Beamsplitter Cubes (NPBSC)

These beamsplitters have minimal polarization sensitivity. Therefore they may be used in polarized optical systems. Due to the metallic component of the hybrid coating, these beamsplitters are not intended for use with high power lasers since they show some absorption – typically about 8%. No ...Read more

These beamsplitters have minimal polarization
sensitivity but also some absorption.

The beamsplitter cube consists of a pair of
right-angle prisms cemented together. The
hypotenuse of one prism is coated with a
beamsplitter coating. The four outside surfaces
of the prism are anti-reflection coated.

Non-polarizing beamsplitters are less sensitive
to changes in angle of incidence.



These beamsplitters have minimal polarization sensitivity. Therefore they may be used in polarized optical systems.

Due to the metallic component of the hybrid coating, these beamsplitters are not intended for use with high power lasers since they show some absorption – typically about 8%. Non‑polarizing beamsplitters are less sensitive to changes in angle of incidence than pure dielectric unpolarized beamsplitters.

The beamsplitter cube consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion and beam skewing. The hypotenuse of one prism is coated with a multilayer beamsplitter coating tuned to the application. The four outside surfaces of the prism are anti-reflection (AR) coated with "V" type or broadband coatings to minimize surface reflection losses over the specific wavelength range.

Range of dimensions: 0.8mm – 100mm

Range of splitting ratios: 50/50 (R/T*)

Accuracy of splitting ratio: ±3% (single wavelength); ±5% (broadband)

Highest available surface figure: λ/10 (DIN: 3/0,2)

Highest available surface quality: 20-10 S/D (DIN: 5/2x0,06)

Wavelength range: single wavelength or broadband

Highest available tolerance of beam deviation: 5" (arcsec)

*: T=(Ts+Tp)/2, R=(Rs+Rp)/2