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Chemical design of inorganic nonlinear optical crystals

A brief review of the progress in the methodology of chemical design of the acentric crystals is presented primarily for nonlinear optics. The prediction and search of new crystalline phases and compounds have been carried out by the development of the matrix method in binary systems, including the salts of 1-1 and 2-1 electrolytes at first for the lead and barium salt classes. The ion radii and chemical bond lengths have been selected as the criteria in the system analysis of the interrelation between composition, structure and properties. The two areas for an initial search of new nonlinear optical materials have been proposed: the oxide salts with the short or long chemical bond length. For example two new binary nonlinear optical iodate crystals have been predicted and synthesed.