Design of parallel beam-splitting Nicol prism with combination of Iceland spar and glass

A new type of parallel beam-splitting Nicol prism made with the combination of iceland crystal and glass is designed so as to save the rare Iceland spar and increase the shear difference of polarized light. The prism is made of ZBaF3 glass and Iceland spar glued with C10H7Br, which has high refractive index. The experiment shows the extinction ratio of o light is better than 10－5, that of e light is better than 10－3 although it is influenced by the optical glass, and the transmittance of the combination is basically the same as that of the pure Iceland spar prism. The theoretical analysis indicates that the influence of the prism structure on the performance can be neglected in some specific cases and it will have a good application potential.