Electric-field enhancement of beam coupling in Sn2P2S6 |
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| Authors: | A Shumelyuk S Odoulov D Kip E Krätzig |
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| Institution: | Institute of Physics, National Academy of Sciences, 03650, Kiev-39, Ukraine (Fax: +380-44/265-2359, E-mail: shumeluk@iop.kiev.ua), UA
Fachbereich Physik, Universit?t Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Germany (Fax: +49-541/969-3510), DE
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| Abstract: | The influence of an external field on photorefractive recording in Sn2P2S6 (SPS) crystals is studied. A large gain factor of more then 15 cm-1 is achieved for a grating spacing of 12 μm at λ=0.9 μm. For an applied field exceeding ±200 V/cm a switching of the beam
coupling direction is detected, exhibiting a pronounced hysteresis.
Received: 25 October 2000 / Revised version: 18 January 2001 / Published online: 21 March 2001 |
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| Keywords: | PACS: 42 65 Hw 42 70 Nq |
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