The p-polarized ray passes undisplaced. The s-polarized ray is reflected and is transmitted through a hole in the wall of the enclosure. A modification involves mirror coating this top surface to reflect the s-polarized beam down at 90° to the transmitted beam. Only the transmitted ray has high polarization purity. Cemented: low power handling.
The Foster polarizer is made of two calcite prisms cemented together. The output beams separate at an angle of 45°.
Although both beams are available for use, only the undisplaced beam is of the exceptionally high polarization purity generally associated with crystal polarizers. The 45° reflected beam has a much lower degree of polarization.
As with all of our optics, we will gladly provide these items custom designed to your particular requirements.
We take quality control very seriously: we rely on accurate, widely recognized measurement systems for testing our optics. The following table indicates the accuracy of measurement for the most relevant parameters.
Surface figure: λ/20
Angle: 0,5 arcsec
Radius: 0,01%
Focal length: 0,03%-0,3%
Centration: +/-0,2µm or +/-2 arcsec
Wavelength: +/-0,3nm (190-1100nm)
We are known for:
Over 30 years experience in optics
ISO9001:2015 Certified
from the very first contact
at remarkable prices
CUSTOMIZED SOLUTIONS
You need to load content from reCAPTCHA to submit the form. Please note that doing so will share data with third-party providers.
More Information
OPTICS
You need to load content from reCAPTCHA to submit the form. Please note that doing so will share data with third-party providers.
More Information
Instruments
You need to load content from reCAPTCHA to submit the form. Please note that doing so will share data with third-party providers.
More Information