Optical properties of MgO doped near-stoichiometric LiTaO3 single crystals

Abstract Comparative study of the optical properties of undoped and 1–3 mol% MgO doped near-stoichiometric LiTaO 3 (SLT) crystals were undertaken. It was observed that the red shift in the absorption edge occurred with the increasing MgO doping concentration. The infrared absorption spectrum of the OH-stretch-mode in SLT was measured for crystals of undoped and 1–3 mol% MgO doped compositions. The coercive field for the crystals was measured to be 0.913, 0.610 and 0.735 kV/mm for 1–3 mol% MgO doped SLT, respectively. Photorefractive damage of SLT single crystals with 1–3 mol% MgO doping levels was measured to be 136.29, 180.25 and 222.54 MW/cm 2 .