INVESTIGATIONS ON GROWTH KINETICS AND CHARACTERIZATIONS OF NONLINEAR OPTICAL MATERIAL: L-THREONINE SUCCINATE (LTS)
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 2015, Vol 4, Issue 2
Abstract
L-threonine succinate (LTS), a new and efficient organic nonlinear optical (NLO) crystal, was successfully grown by slow evaporation technique. The grown crystal was then characterized using XRD and SEM-EDAX analyses, UV– vis–NIR, FTIR, and FT-NMR spectral studies, thermal, microhardness and NLO studies. From the XRD data, it is understood that the crystal LTS belongs to triclinic system with space group ‘P1’. From the UV-vis-NIR absorption study, it is found that the grown crystal shows transparent nature from 240nm onwards and extends beyond NIR region. The optical band gap was evaluated as 5.88eV from Tauc’s plot. The functional groups, molecular structure, compositions, thermal and mechanical stabilities of the grown crystal were analysed. Finally, the nonlinear optical property was studied and the Second Harmonic Generation (SHG) efficiency of the grown material was found to be 1.20 times larger than that of KDP.
Authors and Affiliations
J. Elberin Mary Theras, D. Kalaivani , D. Jayaraman , V. Joseph
Keywords
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