Interplay of Quadratic and Cubic Nonlinear Optical Responses in KDP Single Crystals with Incorporated TiO2 Nanoparticles

  • V. Ya. Gayvoronsky
  • M. A. Kopylovsky
  • M. S. Brodyn
  • A. S. Popov
  • V. O. Yatsyna
  • I. M. Pritula
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 146)

Abstract

We have obtained the significant enhancement (up to 70 %) of the second harmonic generation efficiency in the novel composite material based on KDP single crystalline matrix with incorporated anatase nanoparticles under the mode-locked YAG:Nd laser pulsed excitation. The effect is explained by the internal self-focusing at moderate pump peak intensity due to giant cubic nonlinear optical response of anatase nanoparticles. The possibility to control quadratic and cubic nonlinear optical responses with selection of the nanoparticles concentration and growth sector of the crystal was shown. The nonlinear optical refractive index variation is a very sensitive tool to perform the diagnostics of the KDP and KDP:TiO2 single crystals within CW and pulsed picosecond range laser radiation due to the resonant excitation of the transient intrinsic defect states of the crystal matrix and surface states at the anatase nanoparticles interface.

Keywords

TiO2 Crystallization SiO2 Borate KH2PO4 

Notes

Acknowledgments

The authors are grateful to A. Kosinova for the KDP SC characterization, A. Shkurinov and V. Timoshenko for fruitful discussions, A. Uklein for the assistance in manuscript preparation. The work was partially supported by the NASU 1.4.1 B/141 project, M/312-2012 and CRDF # UKE2-7073-KK-12 grants.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • V. Ya. Gayvoronsky
    • 1
  • M. A. Kopylovsky
    • 1
  • M. S. Brodyn
    • 1
  • A. S. Popov
    • 1
  • V. O. Yatsyna
    • 1
  • I. M. Pritula
    • 2
  1. 1.Institute of Physics NAS of UkraineKievUkraine
  2. 2.Institute for Single Crystals NAS of UkraineKharkovUkraine

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