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  • Vol. 22, Iss. 17 — Sep. 1, 1997
  • pp: 1305–1307

Intensity dependence and white-light gating of two-color photorefractive gratings in LiNbO3

H. Guenther, G. Wittmann, R. M. Macfarlane, and R. R. Neurgaonkar  »View Author Affiliations


Optics Letters, Vol. 22, Issue 17, pp. 1305-1307 (1997)
http://dx.doi.org/10.1364/OL.22.001305


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Abstract

Photorefractive gratings have been written in Pr:LiNbO3 by use of a diode laser for writing and of filtered white light (390–520nm) as a gating source. The gating light increases the writing efficiency by more than 3 orders of magnitude, and the two-step writing process provides nondestructive readout. The material sensitivity for two-color writing rises strongly for gating wavelengths near the bandgap and approaches that of Fe-doped lithium niobate at power densities of a few watts per square centimeter. In addition, we show that the dynamic range of the recording process is strongly dependent on the writing intensity.

© 1997 Optical Society of America

Citation
H. Guenther, G. Wittmann, R. M. Macfarlane, and R. R. Neurgaonkar, "Intensity dependence and white-light gating of two-color photorefractive gratings in LiNbO3," Opt. Lett. 22, 1305-1307 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-17-1305


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