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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 7 — Jul. 1, 2001
  • pp: 931–941

Role of traps in photocoloration of Mn:YAlO3

M. A. Noginov, G. B. Loutts, K. Ross, T. Grandy, N. Noginova, B. D. Lucas, and T. Mapp  »View Author Affiliations

JOSA B, Vol. 18, Issue 7, pp. 931-941 (2001)

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We have studied the processes of photocoloration and discoloration in Mn:YAlO3 and relevant crystals. We show the following: (1) The coloration rate in Mn:YAlO3 does not depend on Mn concentration. (2) The effective recombination time of free electrons with Mn5+ ions and deep traps is of the order of 0.5 ms. (3) The rate of photocoloration increases with an increase in temperature. (4) The discoloration kinetics in Mn:YAlO3 are strongly nonexponential. At room temperature the effective discoloration time approximates 120 years. (5) At increased temperatures the discoloration kinetics accelerate dramatically. (6) We have grown and characterized Mn:GdAlO3 and Mn:YbAlO3 crystals. The activation energy in these crystals is much larger than that in Mn:YAlO3. This suggests the great potential of MnYbAlO3 and Mn:GdAlO3 in terms of permanent data storage.

© 2001 Optical Society of America

OCIS Codes
(160.5320) Materials : Photorefractive materials

M. A. Noginov, G. B. Loutts, K. Ross, T. Grandy, N. Noginova, B. D. Lucas, and T. Mapp, "Role of traps in photocoloration of Mn:YAlO3," J. Opt. Soc. Am. B 18, 931-941 (2001)

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  1. G. B. Loutts, M. Warren, L. Taylor, R. R. Rakhimov, H. R. Ries, G. Miller III, M. A. Noginov, M. Curley, N. Noginova, N. Kukhtarev, J. C. Caulfield, and P. Venkateswarlu, “Manganese-doped yttrium orthoaluminate: a potential material for holographic recording and data storage,” Phys. Rev. B 57, 3706–3709 (1998). [CrossRef]
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