in Chemistry presented on August 10. 1992 Title: Synthetic, Structural, and Optical Investigations of Acentric, Laser Hosts and Ionic Optical Converters

crystal X-ray methods. Temperature-dependent luminescence/excitation spectra and excited-state decay times, absorption spectra, efficiencies of optical second-harmonic generation (SHG), and infrared spectra were recorded. All crystals formed in the noncentrosymmetric space group R32. Electronic spectra revealed typical f-f transitions of the respective rare earth ion weakly perturbed by the local crystal field. Microcrystalline powders exhibited SHG efficiencies approximately two times that of Potassium di-hydrogen phosphate (KDP) for conversion of 1064 nm pulsed laser radiation. Infrared spectra unveiled energetic positions of characteristic B03 vibrational modes. The optical properties of NdSc3(BO3)4 were studied in detail; absorption and emission cross-sections were calculated and an energy level diagram for the crystal field split, metastable 4F312 and terminal 4111,2 and 419,2 levels was derived. Two noncentrosymmetric complex salts of L-alanine, KZn(C3H7NO2)C13 and KPt(C3H6NO2)C12, were designed and synthesized for use as even order Redacted for privac