Abstract
When glass or isotropic solid are acted upon by stress, they show birefringence called photoelasticity. These stresses in optical devices such as glass fiber, sensor, waveguide and display panel and so on reduce optical properties, so photoelasticity becomes one of the important properties of optical materials. There are several methods for the analysis of photoelasticity. However, those methods bring the different photoelastic constant (PEC), because the retardation includes the strain and residual stress.
In this work, the photoelasticity of Binary Phosphate glasses are studied by the retardation with road using frequency stabilized transverse Zeeman laser. This method is possible a precision measurement because of considering the stress as a vector factor.
