special prismatic splitters

Solaris Optics offers other forms of prismatic beam splitters. The custom-made devices are produced in company Warsaw, Poland facility using state-of-art equipment and processes.

Köster prism (Figure 2) is made with two identical right-angle prisms (90o – 60o – 30o). A dielectric coating between the longer short faces of the cemented prisms acts as a beam splitter. Köster prism enables splitting the incident beam into two parallel output beams which propagate along the trajectory deviated from the original incident direction. The distance between the exit beams can be adjusted by hanging the size of the elements. The prism introduces a delay of λ/4 into one of the beams, while the other beam is reflected without any delay. Köster prisms are commonly used in interferometery and telescopes.
Prisms for beam splitting can be modified to provide different dispositions of the output beams. One example is parallel splitting prism (Figure 1), which gives two beams parallel to the incident beam. It is made of two prisms with a beam-splitting coating applied to the joint surface. Both beams traverse identical optical paths.
Solaris Optics provides a variety of AR coating options which help reduce the stray reflected light in the optical system.
If you have questions regarding Köster or other types of prismatic beamsplitters, please do not hesitate to contact us!