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.