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Self-pumped phase conjugation in Bi12TiO20 crystal without external cavity

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Abstract.

We present an experimental study of the self-pumped phase-conjugate-mirror (SPPCM) recording in a Bi12TiO20 sample due to the partial internal reflection of the pump beam from the rear face. SPPCM has been recorded under an external alternating electric field of a square-wave form with response time equal to 170 s at the pump beam intensity of 520 mW/cm2. The mechanism of the SPPCM formation is similar to that of photorefractive double-phase-conjugate mirrors. The most effective SPPCM is recorded at the much larger pump-beam-incident angle than it could be supposed from the typical angular dependence of the two-wave-mixing gain factor. Strong dependence of the gain distribution on the pump-beam-propagation angle is observed. It is found that the response time strongly depends on the preliminary history of the sample.

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Authors and Affiliations

  1. Department of Physics, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland (Fax: +358-13/2513-290, E-mail: Ervin.Nippolainen@joensuu.fi), , , , , , FI

    E. Nippolainen, V.V. Prokofiev, A.A. Kamshilin & T. Jaaskelainen

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  1. E. Nippolainen
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  2. V.V. Prokofiev
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  3. A.A. Kamshilin
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  4. T. Jaaskelainen
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Received: 11 August 1998 / Revised version: 14 January 1999 / Published online: 28 April 1999

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Nippolainen, E., Prokofiev, V., Kamshilin, A. et al. Self-pumped phase conjugation in Bi12TiO20 crystal without external cavity . Appl Phys B 69, 45–50 (1999). https://doi.org/10.1007/s003400050768

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  • DOI: https://doi.org/10.1007/s003400050768

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