Effects of plastic deformation on the optical properties of alkali halide and thallium halide single crystals

Abstract

The effects of plastic deformation on the transmission of TlCl in the visible range, the static dielectric constant of TlCl, and the reflection spectra of NaF and TlCl corresponding to the restrahlen or residual ray were measured. The transmission and the static dielectric constant are decreased with the increasing deformation ratio. The effect of plastic deformation can not be found in the reflection spectrum of TlCl, but the decrease of reflectance of the side band and the splitting of the main hand with the deformation are found in that of NaF.