A study of as-grown, poled and reduced Rh-doped KNbO₃ single crystals by high-resolution X-ray diffraction, Raman scattering, photoluminescence and dielectric measurements

After poling and reduction, single crystals of Rh-doped potassium niobate exhibit interesting structural and physical properties as examined by various characterization techniques. High-resolution X-ray diffraction studies reveal interesting microstructural changes, while Raman scattering, dielectric and photoluminescence studies show excellent correlation with respect to the changes in crystalline perfection.

Synthesis and nucleation studies on L-leucine hydrobromide: a promising nonlinear optical material

A detailed study on nucleation kinetics, including metastable zone width and induction period, of semi-organic L-leucine hydrobromide led to the growth of good quality bulk size crystals. The structure and its perfection were assessed by powder X-ray diffraction, the etch pit method and high-resolution X-ray diffraction. Photoluminescence, time-resolved photoluminescence and Z-scan measurements were carried out for the assessment of optical and nonlinear optical properties.