Growth and Characterization of L-Leucenium Hydrogen Maleate Single Crystals for Nonlinear Optical Applications

Abstract

Good quality single crystals of amino acid based L-Leucenium maleate (LLM) has been grown from aqueous solution by slow evaporation method at room temperature. The crystalline nature of the crystal has been confirmed by the X-ray diffraction analysis Using Cukα radiation of wavelength of 1.54 A°. The presence of various functional groups in the LLM is confirmed by FT-IR using the Bruker IFS66 spectrometer. The functional groups present in the sample were also confirmed by FT-RAMAN spectral analysis. The thermal stability of LLM crystal has been analyzed by TGA and DTA studies. Second harmonic generation test was done on the LLM sample using Kurtz and Perry technique. The NLO efficiency of the grown crystal is nearly 0.6 times that of the standard KDP crystal. The transparent nature of the sample has been conformed from the UV-Vis-NIR spectrum and optical band gap of the LLM crystal also calculated.