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Conference Paper
Photorefractive Effects, Materials, and Devices
La Colle sur Loup France
June 17, 2003
ISBN: 1-55752-755-5
Material Characterization: Inorganic (MCI)

Sn2P2S6 crystals for fast near infrared photorefraction and phase conjugation

Mojca Jazbinšek, Daniel Haertle, Germano Montemezzani, Peter Güunter, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii

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We investigate the photorefractive properties of Sn2P2S6 in the near infrared wavelength range. Conventional "yellow" and modi?ed "brown" crystals are examined, which were grown by vapor-transport technique using respectively SnI4 and SnI2 as a transporter agent. We measured an increase of the photorefractive gain from 3 cm-1 in yellow samples to 18 cm-1 in brown samples at 780 nm. Self-pumped phase conjugation was studied in a ring cavity scheme. Using yellow sample phase conjugate re?ectivity at 780 nm is about 55% and the response time in the order of 5 s at 20 mW. The phase-conjugate response in brown samples, however, is observed in only about 20 ms, which is two-orders of magnitude faster.

© 2003 Optical Society of America

OCIS Codes
(160.5320) Materials : Photorefractive materials
(190.5040) Nonlinear optics : Phase conjugation

M. Jazbinšek, D. Haertle, G. Montemezzani, P. Güunter, A. A. Grabar, I. M. Stoika, and Y. M. Vysochanskii, "Sn2P2S6 crystals for fast near infrared photorefraction and phase conjugation," in Photorefractive Effects, Materials, and Devices, P. Delaye, C. Denz, L. Mager, and G. Montemezzani, eds., Vol. 87 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 190.

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