Dataset for the paper "Exact and linearized refractive index stress-dependence in anisotropic photoelastic crystals"

In order to make the paper "Exact and linearized refractive index stress-dependence in anisotropic photoelastic crystals" more readable and concise, we collected here many of the explicit calculation which are necessary to obtain the results presented into the paper.为使论文《各向异性光弹性晶体中折射率与应力的精确线性依赖关系》更具可读性与简洁性，我们在此汇编了诸多用于推导该论文中所呈现结果所需的显式计算过程。