Pellin Broca prisms are used to disperse beams after harmonic generators and Raman shifters. MOS
Pellin Broca prisms have been designed to provide low loss for P-polarization by changing the
classical 75。angle to an angle between 77。and 88。, assuring beam incidence and exit almost exactly
at the Brewster angle. Crystal quartz Pellin Broca prisms are recommended as dispersing elements for
intense UV when other methods fail. The smaller Suprasil 1 PLBC-5.0-79.5-SS prisms have been specifically
designed for separation of short UV from the small beams of frequency doubled excimer pumped dye lasers.