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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 2 — Feb. 1, 2008
  • pp: 180–186

Enhanced photorefractive properties of Bi-doped Sn 2 P 2 S 6

Ihor V. Kedyk, Pierre Mathey, Gregory Gadret, Olivier Bidault, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii  »View Author Affiliations


JOSA B, Vol. 25, Issue 2, pp. 180-186 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000180


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Abstract

Enhanced photorefractive properties of tin hypothiodiphosphate ( Sn 2 P 2 S 6 ) crystals as a result of Bi doping are presented. These new crystals were obtained by the vapor-transport technique using stoichiometric Sn 2 P 2 S 6 composition with an additional amount of Bi up to 0.5 mol. % in the initial compound. The bandgap edges of the obtained crystals are located at 750 nm and shift toward the red wavelengths with increasing Bi concentration. Sn 2 P 2 S 6 : Bi crystals are found to exhibit larger two-beam coupling gain coefficients (up to 17 cm 1 at a wavelength of 854 nm ) as compared to (i) pure Sn 2 P 2 S 6 ( 2.5 cm 1 at 854 nm ), (ii) Sn 2 P 2 S 6 crystals modified by the growth conditions ( 14 cm 1 at 860 nm ), and (iii) Te-doped Sn 2 P 2 S 6 ( 8 cm 1 at 860 nm ). At the same time, for an intensity of 1.3 W cm 2 at 854 nm , buildup times of 0.9 and 2.5 ms at grating spacings of Λ = 9.8 and 1.3 μ m , respectively, are found; Bi-doped Sn 2 P 2 S 6 crystals are the fastest among all the presently known Sn 2 P 2 S 6 crystals operating at near-infrared wavelengths.

© 2008 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.5320) Materials : Photorefractive materials
(190.7070) Nonlinear optics : Two-wave mixing
(260.2160) Physical optics : Energy transfer

ToC Category:
Materials

History
Original Manuscript: October 4, 2007
Revised Manuscript: November 15, 2007
Manuscript Accepted: November 20, 2007
Published: January 23, 2008

Citation
Ihor V. Kedyk, Pierre Mathey, Gregory Gadret, Olivier Bidault, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii, "Enhanced photorefractive properties of Bi-doped Sn2P2S6," J. Opt. Soc. Am. B 25, 180-186 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-2-180

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