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Sn2P2S6 Crystals for Fast Near-Infrared Photorefraction

Optical and physical properties of Sn 2 P 2 S 6 ferroelectric crystals suitable for photorefractive applications in the red and near-infrared spectral range are reported. The main advantage of Sn 2 P 2 S 6 is its high beam-coupling gain combined with considerably faster response in the near infrared...

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Published in:Ferroelectrics 2005-01, Vol.318 (1), p.89-94
Main Authors: Jazbinsek, M., Haertle, D., Bach, T., Montemezzani, G., Güunter, P., Grabar, A. A., Vysochanskii, Yu. M.
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container_end_page 94
container_issue 1
container_start_page 89
container_title Ferroelectrics
container_volume 318
creator Jazbinsek, M.
Haertle, D.
Bach, T.
Montemezzani, G.
Güunter, P.
Grabar, A. A.
Vysochanskii, Yu. M.
description Optical and physical properties of Sn 2 P 2 S 6 ferroelectric crystals suitable for photorefractive applications in the red and near-infrared spectral range are reported. The main advantage of Sn 2 P 2 S 6 is its high beam-coupling gain combined with considerably faster response in the near infrared compared to conventional oxide-type photorefractive materials. We show that modifying the growth conditions and doping with Te can efficiently improve the photorefractive properties of Sn 2 P 2 S 6 . Photorefractive two-beam coupling gain at 860 nm increases from about 2 cm − 1 in conventional "yellow" Sn 2 P 2 S 6 to about 7 cm − 1 in Te-doped samples and 14 cm −1 in modified "brown" samples. We examine the self-pumped optical phase conjugation properties of Sn 2 P 2 S 6 in a ring-cavity scheme. Phase-conjugate signals with amplitudes close to the theoretical limit and rise times of about 10 ms for 4 W/cm 2 pump intensity at 780 nm and 50 ms for 2.5 W/cm 2 pump intensity at 860 nm are obtained. *Present Address: Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), University of Metz and Supélec, F-57070 Metz, France.
doi_str_mv 10.1080/00150190590966108
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source Taylor and Francis:Jisc Collections:Taylor and Francis Read and Publish Agreement 2024-2025:Science and Technology Collection (Reading list)
subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Elements, oxides, nitrides, borides, carbides, chalcogenides, etc
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
phase conjugation
Phase conjugation, optical mixing
photorefractive and kerr effects
photorefractive effect
Physics
two-beam coupling
title Sn2P2S6 Crystals for Fast Near-Infrared Photorefraction
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