Rochon prism

Rochon prism

A Rochon prism is a type of polariser. It is made from 2 pieces of a birefringent material such as Calcite, which are cemented together.

The Rochon Prism was invented by and is named after Alexis-Marie_de_Rochon (on French Wikipedia) (1741-1817). It is in many way similar to the Wollaston prism, but one ray (the ordinary ray) passes through the prism undeviated. The Senarmont prism is similar but transmits the extraordinary ray undeviated, and is air-spaced. Rochon prisms are commercially available, but for many applications other polarisers are preferred.

References

External Links

An article by CVI (optics manufacturer) about different types of polariser

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