Growth, Defects and Electrooptic Properties of RbTiOAsO₄ Crystal

RbTiOAsO₄(RTA) crystals of high optical quality were grown with flux method. The defects of RTA crystals are mainly growth striations, growth sector boundaries and sometimes ferroelectric domains. The refractive indices and electrooptic coefficients were measured together with dielectric constants, ionic conductivity and direct current resistivities. It is shown that RbTiOAsO₄ is not only as good a nonlinear optical crystal as KTiOPO₄ but also a superior electrooptic crystal.