Growth and characterization of Thiourea based organic and Semiorganic non linear optical Single crystals

Abstract

Non Linear Optical materials play an important role in the field newlineof telecommunication optical switching and optical processing In recent newlineyears several studies dealing with organic inorganic and semiorganic newlinemolecules and materials called nonlinear optics NLO are being reported newlinedue to the increasing need for cheap and easily processable materials for newlinephotonics applications The nonlinear responses induced in various newlinemolecules in solution and solids are great interest in many field of newlineresearch Organic materials possess good optical transmission newlinecharacteristics ultrafast non linear response and high optical damage newlinethreshold they attracted chemists and material scientists But organic newlinematerials are soft in nature due to weak vander walls and hydrogen bonds newlinewith conjugated and#960; electrons by which these materials are constituted newlineThiourea molecules are an interesting inorganic matrix modifier newlinedue to its large dipole moment and its ability to form an extensive network newlineof hydrogen bonds Single crystals of thiourea based some organic newlinethiourea crystals from aqueous sulphuric and nitric acid and semi organic newlinecalcium thiourea nitrate tetrahydride CTN sodium thiourea chloride newline NTC zinc thiourea chloride ZTC zinc thiourea sulphate ZTS newlinepotassium thiourea chloride PTC potassium thiourea sulphate PTS newlinewere successfully grown by solution growth employing solvent newlineevaporation technique newline newline