Growth and characterization of NLO based L-arginine maleate dihydrate single crystal.
Single crystals of L-arginine maleate dihydrate (LAMD) were successfully grown from aqueous solution by solvent evaporation technique. As-grown crystals were analyzed by different instrumentation techniques such as X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectra and UV-vis near infrared (NIR) transmittance spectra. Thermal behavior has been studied with TGA/DTA analyses. The optical second harmonic generation (SHG) conversion efficiency of LAMD was determined using Kurtz powder technique and found to be 1.5 times that of KDP.
Growth and characterization of nonlinear optical l-arginine maleate dihydrate single crystals
Abstract Bulk single crystals of l -arginine maleate dihydrate (LAMD), an organic nonlinear optical material, have been grown from aqueous solution by slow cooling technique. Single crystals of size 48 × 33 × 7 mm 3 were grown over a growth period of 3 weeks. Since LAMD has high solubility in water, the growth parameters have been optimized for the reproducible growth of good quality crystals. The cell parameters were estimated by powder X-ray diffraction analysis. FTIR analysis was used to confirm the presence of various functional groups in the grown crystal. Thermal behavior of the grown crystal was investigated by DTA and TGA. The mechanical property of the grown crystal has been studied using Vicker's microhardness tester. The etching studies have been carried out on the grown crystals. The powder technique of Kurtz and Perry confirms the NLO property of the grown crystal and the SHG efficiency of LAMD was found to be 1.4 times that of KDP crystal.
Single crystal growth and characterization of the nonlinear optical crystal l-arginine hydrofluoride
Abstract In this communication, single crystal growth of the nonlinear optical crystal l -arginine hydrofluoride C6H14N4O2. HF (here after abbreviated as LAHF) of dimensions up to 20×15×3 mm3 is reported. Crystals have been grown by the temperature lowering method and also by slow evaporation method at constant temperature 30°C from its aqueous solution with pH at 2.2. As-grown single crystals were then characterized by density measurement, solubility test, X-ray powder diffraction studies and infrared (IR) spectroscopy.