A
beamsplitter is an optical device that splits a beam of light in
two. It is the crucial part of most interferometers. Cubes are a
convenient, protected form, made from two triangular glass prisms
which are special coated and cemented together such that half of
the light incident is reflected and the other half is transmitted.
Another design is the use of a half mirror. This is a plate of
glass with a thin coating such that, of light incident at a
*5 degree angle, one half is transmitted and
one half is reflected. The performance of beamsplitters are
mainly depended on the coating
specifications.
1. Beamsplitter
Plate Beamsplitter Plate is a plate of glass with a
thin coating such that, of light incident at a
*5 degree angle, one half is transmitted and one half is
reflected.
2.
Beamsplitter Cube Beamsplitter Cube is a convenient, protected
form, made from two triangular glass prisms which are special
coated and cemented together such that half of the light incident
is reflected and the other half is
transmitted.
3.
Polarization Beamsplitter
Cube Polarization Beamsplitter Cube is made from two
triangular glass prisms which are polarization beamsplitter coating
on hypotenuse and cemented together. The output beam which is
parallel to input beam is called the p-polarized beam while the
orthogonal output beam is defined as the s-polarized
beam.
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