Growth and characterization of pure and doped organic nonlinear optical single crystal: l-Alanine alaninium nitrate (LAAN)

Ahlam, M. A. and Hemaraju, B. C. and Gnana Prakash, A. P. (2013) Growth and characterization of pure and doped organic nonlinear optical single crystal: l-Alanine alaninium nitrate (LAAN). Optik, 124 (23). 5898 - 5905.

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Official URL: https://doi.org/10.1016/j.ijleo.2013.04.047

Abstract

The pure l-alanine alaninium nitrate (LAAN) single crystals and LAAN crystals doped with lanthanum oxide (La2O3), sodium chloride (NaCl), urea (CH4N2O), glycine (C2H5NO2) and thiourea (CH4N2S) were grown by slow evaporation method. The X-ray diffraction analysis, scanning electron microscopy (SEM), energy dispersive X-ray (EDAX) analysis, UV�vis spectral analysis, dielectric studies and powder SHG measurement are studied systematically. The slight changes in the lattice parameters were observed for the doped crystals compared to pure LAAN crystal. The incorporation of doping into the crystal lattice was confirmed by energy dispersive X-ray analysis. There is no change in the transmission window due to doping and the percentage of transmission in doped samples was found to increase as compared to that of pure LAAN crystal. The dielectric constant of pure crystal was found to be less than that of doped crystals. The AC conductivity was found to increase after doping and with the increase in temperature. A green radiation of 532nm was observed from the pure and doped LAAN crystals confirming the second harmonic generation (SHG) of the crystals.

Item Type: Article
Uncontrolled Keywords: Nonlinear optics, Organic materials, Doping effects, X-ray diffraction, Electrical measurements
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Arshiya Kousar
Date Deposited: 13 Dec 2019 05:54
Last Modified: 13 Dec 2019 05:54
URI: http://eprints.uni-mysore.ac.in/id/eprint/10191

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