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.
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Received: 25 October 2000 / Revised version: 18 January 2001 / Published online: 21 March 2001
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Shumelyuk, A., Odoulov, S., Kip, D. et al. Electric-field enhancement of beam coupling in Sn2P2S6. Appl Phys B 72, 707–710 (2001). https://doi.org/10.1007/s003400100556
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DOI: https://doi.org/10.1007/s003400100556