Electric-field enhancement of beam coupling in Sn2P2S6

The influence of an external field on photorefractive recording in Sn2P2S6 (SPS) crystals is studied. A large gain factor of more then 15 cm is achieved for a grating spacing of 12 *mm at *l=0.9 *mm. For an applied field exceeding c200 V/cm a switching of the beam coupling direction is detected, exh...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2001-05, Vol.72 (6), p.707-710
Main Authors: Shumelyuk, A., Odoulov, S., Kip, D., Krätzig, E.
Format: Article
Language:English
Subjects:
Beams (radiation)
Crystals
Diffraction gratings
Gain
Gratings (spectra)
Joining
Lasers
Recording
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Summary:The influence of an external field on photorefractive recording in Sn2P2S6 (SPS) crystals is studied. A large gain factor of more then 15 cm is achieved for a grating spacing of 12 *mm at *l=0.9 *mm. For an applied field exceeding c200 V/cm a switching of the beam coupling direction is detected, exhibiting a pronounced hysteresis.
ISSN:0946-2171
1432-0649
DOI:10.1007/s003400100556