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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 22, Iss. 11 — Nov. 1, 2005
  • pp: 2459–2467

Wavelength dependence of visible and near-infrared photorefraction and phase conjugation in Sn2P2S6

Mojca Jazbinšek, Daniel Haertle, Germano Montemezzani, Peter Günter, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii  »View Author Affiliations


JOSA B, Vol. 22, Issue 11, pp. 2459-2467 (2005)
http://dx.doi.org/10.1364/JOSAB.22.002459


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Abstract

The photorefractive properties of Sn2P2S6 crystals in the wavelength range from 633to1064 nm are investigated. Conventional yellow and modified brown crystals with a variation of nonstoichiometric defects are examined. Brown crystals respond much faster and exhibit substantially higher photorefractive gain than yellow crystals, up to 18 cm−1 at 780 nm and 8.5 cm−1 at 1064 nm. Ring-cavity self-pumped phase conjugation is demonstrated using both types of crystal. The phase-conjugate response of brown Sn2P2S6 is 2 orders of magnitude faster than in yellow Sn2P2S6 or Rh-doped BaTiO3, with a grating recording time below 50 ms for 30 mW power at 860 nm. Various thresholding effects are analyzed to determine the optimal wavelength range for the two types of crystal. We find an optimum in the range of 650–950 nm for yellow and in the range of 850–1100 nm for brown Sn2P2S6.

© 2005 Optical Society of America

OCIS Codes
(160.5320) Materials : Photorefractive materials
(190.5040) Nonlinear optics : Phase conjugation
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing

ToC Category:
Nonlinear Optics

Citation
Mojca Jazbinšek, Daniel Haertle, Germano Montemezzani, Peter Günter, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii, "Wavelength dependence of visible and near-infrared photorefraction and phase conjugation in Sn2P2S6," J. Opt. Soc. Am. B 22, 2459-2467 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-11-2459

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