Synthesis, spectroscopic, optical, thermal and mechanical characterization of nonlinear proline oxalate single-crystals

Akilandeswari, S.; Jothi, L.; Elkhatib, Walid F.; Fayad, Eman; Ali, Ola A. Abu; El-Sayyad, Gharieb S.

doi:10.1007/s11082-022-04241-2

Cited by 3 publications

(1 citation statement)

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“…The number of additives supports the growth mechanism of crystal growth, which in turn leads to a faster growth rate and also qualitatively improves the various physical properties of the grown crystal. This enhanced growth rate and superior quality crystals are reported for the addition of not only organic molecules [13][14][15][16] but also inorganic molecules [17][18][19].…”

Section: Ammonium Dihydrogen Phosphate As An Optical Crystalmentioning

confidence: 75%

Investigation of Physiochemical Impact of Organic Molecule L-Lysine on Ammonium Dihydrogen Phosphate Single Crystal for Optoelectronics Applications

2023

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Ammonium dihydrogen phosphate (ADP) single crystals along with the incorporated 0.5 and 1% L-lysine, an organic molecule which possesses a good nonlinear response, were grown with the vision to meet the requirements of the optoelectronic industry. The inclusion of the L-lysine molecule in the crystal was confirmed by the XRD and EDX. The experiment not only confirms the inclusion level of the impurity but also the capability of the amino acid molecule to bond hydrogen within the crystal facet. A minor decrease in lattice parameters was reported for all ADP: L-lysine crystals compared with pure ADP. The structures of the grown crystals were identified as tetragonal with the space group I42d by the single-crystal XRD analysis. Vibrational signatures and functional groups were confirmed using FTIR spectroscopy. The thermal stability and decomposition temperatures of 0.5 and 1% L-lysine-added crystals were measured by TG/DTA and found to be 203 °C and 207 °C, respectively. The UV–visible transmission spectra prove a higher transparency for doped crystals as compared to pure crystals; therefore, these doped crystals can be considered the best option for the frequency doubling process in a broad range of visible and near-IR spectra. The improved hardness of the doped crystals was confirmed by the Vickers hardness data. The nonlinear optical (NLO) behaviour investigated using a second-harmonic generation (SHG) technique, indicating an efficient quadratic nonlinear coefficient of ADP: Lysine crystals at a 1064 nm initial wavelength, shows about 1.5-fold higher efficiency compared with undoped ADP.

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