Article ID Journal Published Year Pages File Type
1495790 Optical Materials 2011 8 Pages PDF
Abstract

The impact of titanium dioxide (anatase) nanocrystals on growth process, optical and structural properties of KDP single crystal was studied. As-grown crystals were characterized by High Resolution Three-crystal X-ray Diffractometer, optical diagnostics of elastic scattering, cone-shaped interference method, and spatial profile analysis method. In the composite system KDP:TiO2 the effect of giant nonlinear optical response of anatase nanoparticles was revealed, in particular in the intensity range up to 20 MW/cm2 the change of sign of the nonlinear refraction index was found. These results can be explained by the resonance excitation of defective states on TiO2 nanoparticle surface.

Research highlights► KDP crystals containing TiO2 nanoparticles are grown. ► TiO2 nanoparticles are captured preferentially by the pyramidal crystal face. ► Two-dimensional ordering of TiO2 nanoparticles in the crystal bulk is established. ► TiO2 changes the sign and magnitude of the refractive NLO response of KDP:TiO2.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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