IMPROVEMENT OF SECOND HARMONIC GENERATION EFFICIENCY OF THE KDP CRYSTAL BY CO-DOPING WITH CRYSTAL VIOLET AND EDTA
Main Article Content
Abstract
KDP (Potassium Dihydrogen Phosphate) is one of the typical nonlinear optical crystals. Current research trend on KDP crystals is the doping of organic compounds into them to improve their second-order nonlinear optical coefficients. In this paper, KDP single crystals were grown from KDP aqueous solutions containing only Crystal Violet (CV) dye, only Disodium Ethylenediaminetetraacetate Dihydrate (EDTA) salt, and both CV and EDTA by the temperature reduction method and Sankaranarayanan-Ramasamy technique. The molar percentage concentrations of CV are 0.0001%, 0.00025%, and 0.0005%. The molar percentage concentration of EDTA is 1%. The doped KDP crystals were evaluated for elemental composition and crystal structure, respectively, by EDX spectroscopy and XRD patterns. Some of their optical properties were investigated through UV-Vis spectroscopy and Second Harmonic Generation (SHG). The obtained results showed the influence of CV, EDTA, co-doping, and concentrations of CV on the properties of KDP single crystal, especially the SHG efficiencies of the crystals. The results of this study could be used to expand the application range of KDP crystals in laser-based optical systems.
Keywords
Crystal Violet, co-doping, EDTA, KDP, second harmonic generation
Article Details
References
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