Growth, spectroscopic, dielectric and nonlinear optical studies of semi organic nonlinear optical crystal – l-Alanine lithium chloride

A new and efficient semi organic nonlinear optical crystal (NLO) from the amino acid family l-alanine lithium chloride (LAL) has been grown by slow evaporation technique from aqueous solution. The functional groups were identified from NMR spectral studies. Mass spectral analysis shows the molecular ion mass. Dielectric studies has been done for the grown crystal and relative SHG efficiency is measured by Kurtz and Perry method and found to about 0.43 times that of standard potassium dihydrogen phosphate (KDP) crystals. The compound crystallized in non-centrosymmetric space group Pna21. The results have been discussed in detail.

Graphical abstractA new nonlinear optical single crystal of l-alanine lithium chloride has been grown successfully by slow evaporation method. The grown crystal was subjected to spectroscopic techniques like NMR and mass spectrum. The results have been discussed in detail.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► This paper emphasizes on spectral and NLO studies of LAL single crystals. ► Growth by slow evaporation technique. ► Characterized by NMR, mass spectroscopy and dielectric studies. ► SHG efficiency of LAL (0.43) is more than twice the efficiency of l-alanine (0.2).