Brewster Prisms

Brewster prisms are dispersing prisms which have been arranged so that a beam entering at the Brewster angle undergoes minimum deviation and hence maximum dispersion.  They are used to fine tune lasers by selection of multi-spectral lines.   By altering the angle of incidence slightly it is possible to enhance certain wavelengths and eliminate others.  These prisms have a very low loss for the p-polarized beam.   f required for group velocity dispersion correction in femto-second lasers please ask for the ultra-fast version.

These prisms are made from UV fused silica or SF10:

The accuracy of these prisms is controlled by the precision of the prism angles.  They are made to an accuracy of 10 arc minutes.  

The apex angle, θ is:   69.1° for UVFS and 60.6°for SF10

 We offer Brewster prisms  uncoated but special coatings can be applied on request.

We can supply Brewster prisms in the following standard sizes: 17, 15, 25 mm.  Other sizes will be considered on special request.

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