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  • Vol. 19, Iss. 17 — Sep. 1, 1994
  • pp: 1293–1295

Light-induced absorption in photorefractive strontium barium niobate

Sergei Orlov, Mordechai Segev, Amnon Yariv, and Ratnakar R. Neurgaonkar  »View Author Affiliations


Optics Letters, Vol. 19, Issue 17, pp. 1293-1295 (1994)
http://dx.doi.org/10.1364/OL.19.001293


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Abstract

Sr0.59Ba0.41Nb2O6 and Sr0.75Ba0.25 Nb2O6 exhibit an intensity-dependent absorption in the visible spectral range. We perform pump (green)–probe (red) measurements and find variation as high as 0.45 cm−1 in the absorption coefficient, which depends significantly on the polarization of the probe light beam. Our results indicate a nonexponential dark decay time of the induced absorption and suggest that the trapping potential of the shallow traps varies significantly from one trap to another (multiple isolated shallow traps).

© 1994 Optical Society of America

History
Original Manuscript: February 10, 1994
Published: September 1, 1994

Citation
Sergei Orlov, Mordechai Segev, Amnon Yariv, and Ratnakar R. Neurgaonkar, "Light-induced absorption in photorefractive strontium barium niobate," Opt. Lett. 19, 1293-1295 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-17-1293


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References

  1. R. R. Neurgaonkar, W. K. Cory, J. Opt. Soc. Am. B 3, 274 (1986). [CrossRef]
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  8. This assumption is equivalent to assuming that the shallow traps occupy a single level and is valid for SBN:60 but, as shown below, is not valid for SBN:75.
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  10. After this Letter was submitted, a similar observation that indicated an identical ratio between light-induced absorption coefficients of extraordinarily and ordinarily polarized light in SBN:60:Ce was reported byK. Buse, R. Pankrath, E. Krätzig, Opt. Lett. 19, 260 (1994). [CrossRef] [PubMed]
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  12. H. Mabuchi, E. S. Polzik, H. J. Kimble, “Blue-light-induced infrared absorption in KNbO3” J. Opt. Soc. Am. B (to be published).
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