Growth and optical activity of Ca3TaGa3Si2O14 (CTGS) single crystal

Abstract Single crystals of Ca 3 TaGa 3 Si 2 O 14 (CTGS) with ordered Ca 3 Ga 2 Ge 4 O 14 (CGG) structure were successfully grown from stoichiometric melts by conventional Czochralski technique along the X -axis. The as-grown crystal exhibits good optical quality and high optical transmittance in Z -direction. The specific rotation ρ in the Z -direction of a CTGS sample was determined by a TU-1901 spectrophotometer via measuring the optical transmission in dependence on the wavelength between crossed polarizers. The maximum specific rotation ρ of CTGS crystal was found to be 180° mm −1 at the wavelength of 301 nm.