20 April 1998 Structural quality of impurity-containing KDP single crystals
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KDP single crystals grown from aqueous solutions by the recirculation method from nominally 'pure' raw material and added impurities Ca, Si, Pb, Cr, hydrogen peroxide were studied by high resolution x-ray method. It was found that additional introduction of impurities leads to a deterioration of structural quality of crystals. The main growth defects of crystals at dislocation density approximately 102 cm-2 at the absence of zonarity and sectionality is the impurity striation and presence of low angle quasi-boundaries. One can observe a correlation between the concentration of low angle quasi-boundaries, dispersion of structure sensitive parameters and the value of bulk laser damage threshold.
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V. F. Tkachenko, M. A. Rom, Vitaly I. Salo, Marina I. Kolybayeva, "Structural quality of impurity-containing KDP single crystals", Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); doi: 10.1117/12.307043; https://doi.org/10.1117/12.307043

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