Electrooptic properties and their temperature dependence in single crystals of lead barium niobate and strontium barium niobate

摘要

The temperature dependence of the electrooptic properties of tetragonal lead barium niobate crystals of compositions (Pb_xBa_1-xNb_2O_6 where x=0.50 and 0.57, i.e., PBN50 and PBN57) was measued. For comparison studies, similar measurements were performed on 0.01 mol/100 cerium-doped Sr_0.61Ba_0.39Nb_2O_6 SBN61) single crystals (i.e., SBN61:Ce). Temperature dependences of the piezoelectric d coefficients for SBN61 were measured independently by resonance technique. Both PBN57 have electrooptic (EO) r_13 and r_33 coefficients that are large and are nearly temperature independent compared to the relatively temperature denpendent coefficients found in the case of SNB61:Ce.