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Applied Physics B

, Volume 75, Issue 8, pp 891–894 | Cite as

Reduced space-charge fields in near-stoichiometric LiTaO3 for blue, violet, and near-ultraviolet light beams

  • M. Jazbinšek
  • M. Zgonik
  • S. Takekawa
  • M. Nakamura
  • K. Kitamura
  • H. Hatano
Rapid communication

Abstract.

The wavelength dependence of the space-charge field as induced in near-stoichiometric LiTaO3 crystals is investigated by measuring the bulk photogalvanic effect and the photoconductivity. LiTaO3 crystals of composition nearer to stoichiometry exhibit a pronounced reduction of the saturated space-charge field, which results from a larger increase in the photoconductivity relative to the photogalvanic effect. Especially, at near-UV wavelengths, the saturated space-charge field of the order of 0.1 kV/cm reaches a minimum that is two orders of magnitude lower than typical values observed in undoped near-stoichiometric LiNbO3.

PACS: 42.70.Nq; 61.50.Nw; 78.20.-e 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • M. Jazbinšek
    • 1
  • M. Zgonik
    • 2
  • S. Takekawa
    • 3
  • M. Nakamura
    • 3
  • K. Kitamura
    • 3
  • H. Hatano
    • 4
  1. 1.Institute of Quantum Electronics, Swiss Federal Institute of Technology, ETH Hönggerberg, HPF-E12, 8093 Zürich, SwitzerlandCH
  2. 2.Faculty of Mathematics and Physics, University of Ljubljana and ‘J. Stefan’ Institute, Jamova 39, Ljubljana 1000, SloveniaSI
  3. 3.National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, JapanJP
  4. 4.Corporate R&D Laboratories, Pioneer, 6-1-1 Fujimi, Tsurugashima 350-2288, JapanJP

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