Photo-elastic Dispersion in Cubic Crystals

Abstract

CRYSTALS of classes T _d, 0 and 0_h are characterized by the strain-optical coefficients P ₁₁, P ₁₂ and P ₄₄, whereas those of the classes T and T _h have an additional coefficient¹ P ₁₃. Using standard methods described elsewhere^2,3 the P values at three wavelengths of light for a few cubic crystals have been determined and are given in Table 1. In Table 2 the values obtained by me for some optical glasses are entered.