Linear and nonlinear optical properties of KDP crystals with incorporated Al2O3⋅nH2O nanoparticles

•KDP single crystals with incorporated Al2O3·nH2O nanoparticles were grown.•An absorption band caused by the presence of NOA in the crystals is revealed.•The sign inversion of the refractive nonlinear optical response in KDP:NOA crystals was observed. Optical and nonlinear optical properties of a no...

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Bibliographic Details
Published in:	Optical materials Vol. 35; no. 12; pp. 2429 - 2434
Main Authors:	Pritula, I.M., Kosinova, A.V., Bezkrovnaya, O.N., Kolybaeva, M.I., Puzikov, V.M., Lopin, A.V., Tkachenko, V.F., Kopylovsky, M.A., Yatsyna, V.O., Gayvoronsky, V.Ya
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier B.V 01-10-2013 Elsevier
Subjects:	Crystal growth Exact sciences and technology Fundamental areas of phenomenology (including applications) Nanoparticles Nonlinear optical crystals Optical materials Optics Physics Self-action of laser pulses Transmittance Crystal growth Nanoparticles Self-action of laser pulses Transmittance Nonlinear optical crystals Non linear material Refractive index Nanostructures Pulsed lasers Aluminium Oxides Monocrystals Composite materials Potassium Dihydrogenphosphates KDP Optical properties Optical materials Quaternary compounds Nonlinear optics Nonlinear refractive index ps range
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Summary:	•KDP single crystals with incorporated Al2O3·nH2O nanoparticles were grown.•An absorption band caused by the presence of NOA in the crystals is revealed.•The sign inversion of the refractive nonlinear optical response in KDP:NOA crystals was observed. Optical and nonlinear optical properties of a novel composite system based on KDP single crystals with embedded nanoparticles of nanostructured oxyhydroxide of aluminum (Al2O3·nH2O, NOA), were studied. KDP crystals with NOA nanoparticles (KDP:NOA) possess high optical quality and homogeneity. Optical spectroscopy showed the presence of an absorption band at 270nm caused by NOA nanoparticles incorporated in the KDP matrix. There was observed an enhancement of nonlinear refractive index and inversion of its sign in KDP:NOA crystals in comparison with nominally pure KDP crystals under excitation of picosecond laser pulses. The obtained results demonstrate that KDP:NOA is a promising composite material for optoelectronics and nonlinear optics.
ISSN:	0925-3467 1873-1252
DOI:	10.1016/j.optmat.2013.06.046