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Journal of Sol-Gel Science and Technology

, Volume 56, Issue 1, pp 1–6 | Cite as

Third-order nonlinear and planar waveguide properties of TiO2/organically modified silane hybrid films doped with different disperse red 1 content

  • M. Sun
  • Wen Xiu Que
  • Tian Xi Gao
  • C. H. Kam
Original Paper

Abstract

TiO2/organically modified silane organic–inorganic hybrid films doped with different disperse red 1 contents are prepared by combining a low-temperature sol–gel method and a spin-coating process. Effects of the disperse red 1 content on the third-order nonlinear and the planar waveguide properties of the hybrid films are also studied by a z-scan technique and a prism coupling technique. Results indicate that the nonlinear refractive index of the hybrid films is negative, whose magnitude is of the order of 10−8 esu for the measured samples. It is suggested that both the thermal effect and the photoisomerization process contribute to the third-order nonlinear optical properties of the hybrid films jointly. It is also found that the refractive index and the thickness of the hybrid films decrease with an increase of the temperature as the independent variable. In addition to, optical absorption properties of the hybrid films are characterized by UV–Visible spectroscopy. These results indicate that the as-prepared hybrid films are promising candidates for photonic applications.

Keywords

Sol–gel method Disperse red 1 Hybrid thin film Third-order nonlinear Planar waveguide 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant No. 90923012 and 60477003, and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Education Ministry of China (2007).

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • M. Sun
    • 1
  • Wen Xiu Que
    • 1
  • Tian Xi Gao
    • 1
  • C. H. Kam
    • 2
  1. 1.Electronic Materials Research Laboratory, School of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’anPeople’s Republic of China
  2. 2.School of Electrical and Electronic EngineeringNanyang Technological UniversitySingaporeSingapore

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