Foster Polarizing Beamsplitter Cubes

The prisms produce two beams polarized perpendicular to each other. They are produced from high-grade calcite free of striae and bubbles. The angle between the emerging beams is 45° or 90° ± 3'. The usable spectral range is 300 to 2700 nm (absorption of the deflected beam occurs above 2 µm).
The field of view is ± 6° at 550 nm. The extinction ratio is 10^-6 for the undeviated beam but not as good for the reflected beam. Flatness of the outer surfaces is better than λ/2 (λ = 550 nm). Deformation of a transmitted plane wave is less than λ/2, and prismatic deviation of the transmitted beam is less than about 2'.
The prisms are supplied in a box mount as standard.

Deviation 45°

Prism		Holder		Deviation 45°
Aperture	Length	Cross-Section	Length	Ordernr.	Price 1-5 pc.	Price 6-10 pc.
6 mm 8 mm 10 mm 12 mm	16 mm 20 mm 24 mm 30 mm	18,0 x 14 mm 22,6 x 18 mm 25,0 x 18 mm 29,0 x 20 mm	20 mm 26 mm 30 mm 36 mm	PFO 45.06 PFO 45.08 PFO 45.10 PFO 45.12	€ 1911 € 2295 € 2688 € 4489	€ 1820 € 2229 € 2612 € 4361

Deviation 90°

Prism		Holder		Deviation 90°
Aperture	Length	Cross-Section	Length	Ordernr.	Price 1-5 pc.	Price 6-10 pc.
8 mm 10 mm 12 mm	20 mm 24 mm 30 mm	22,6 x 18 mm 25,0 x 18 mm 29,0 x 20 mm	26 mm 30 mm 36 mm	PFO 90.08 PFO 90.10 PFO 90.12	€ 2772 € 3276 € 5098	€ 2693 € 3183 € 4953

Available on special order

If required, a λ/2 retardation plate can be cemented onto the side window. This plate (for one wavelength) rotates the polarization direction by 90° so that both emerging beams are polarized in the same direction. → on request
Antireflection coatings → on request

Shortinfo

Categorie

Polarizer

Typ

Foster

Material

calcite

Spectral range

300 - 2700nm

further info

cemented, deviation 45° or 90°

standard sizes

6 - 12mm

prices

1911 - 5098 €

Downloads

Data sheet