Beamsplitter Penta Prisms (BSPP)

These beamsplitters combine the function of a beamsplitter with the convenience of a penta prism: adjustment free 90° reflection. The beamsplitter penta prism consists of a precision penta prism carefully cemented together with a wedge to minimize wavefront distortion and beam skewing. The ceme ...Read more

These beamsplitters combine the function of a
beamsplitter
with the convenience of a penta
prism: adjustment free 90° reflection.

The beamsplitter penta prism consists of a
penta prism
cemented together with a wedge.
The cemented surface of the wedge is coated
with a beamsplitter coating.

The three outside surfaces of the prism are
anti-reflection coated. 



These beamsplitters combine the function of a beamsplitter with the convenience of a penta prism: adjustment free 90° reflection.

The beamsplitter penta prism consists of a precision penta prism carefully cemented together with a wedge to minimize wavefront distortion and beam skewing. The cemented surface of the wedge is coated with a multilayer beamsplitter coating tuned to the application. The three 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.

BSPPs are available in unpolarized, non-polarizing and polarizing designs. The functional features of these designs are similar to the respective cube polarizers.

Range of dimensions: 2mm – 100mm

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)