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Metastable phases in HxLi1-xTaO3 waveguide layers and pure LiTaO3

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Abstract

The formation of high-temperature phases in low-doped H:LiTaO3 waveguide layers in Z-cut LiTaO3 has been observed both by refractive-index and IR-spectra measurements. This permits us to correlate the index jumps to the changes of the OH bonds in the crystal lattice. Reversible phase transitions were detected in the temperature interval T=50–200 °C over a wide range of hydrogen content including as-grown LiTaO3. The high-temperature phases are metastable close to room temperature. This was demonstrated by tracing the time evolution of the refractive-index change. It was shown that the high-temperature phases are responsible for the long-term refractive-index instabilities in both H:LiTaO3 waveguides and virgin LiTaO3.

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Authors and Affiliations

  1. Institute of Semiconductor Physics, 630 090, Novosibirsk 90, Russia, RU

    V.V. Atuchin, T.I. Grigorieva, E.V. Spesivtsev & C.C. Ziling

  2. Novosibirsk State Technical University, 630 092, C. Marx Avenue 20, Novosibirsk 92, Russia, RU

    I.E. Kalabin

  3. Central Laboratory on Solar Energy and New Energy Sources, 72 Tzarigradsko Chaussee Boulevard,1784 Sofia, Bulgaria, BG

    D. Dimova-Malinovska

  4. Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Boulevard,1784 Sofia, Bulgaria, BG

    I. Savatinova, I. Savova & S. Tonchev

Authors
  1. V.V. Atuchin
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  2. D. Dimova-Malinovska
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  3. T.I. Grigorieva
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  4. I.E. Kalabin
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  5. I. Savatinova
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  6. I. Savova
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  7. E.V. Spesivtsev
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  8. S. Tonchev
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  9. C.C. Ziling
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Additional information

Received: 7 May 2001 / Revised version: 10 August 2001 / Published online: 30 October 2001

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Atuchin, V., Dimova-Malinovska, D., Grigorieva, T. et al. Metastable phases in HxLi1-xTaO3 waveguide layers and pure LiTaO3. Appl Phys B 73, 559–563 (2001). https://doi.org/10.1007/s003400100710

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  • DOI: https://doi.org/10.1007/s003400100710

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