Intensity dependence and white-light gating of two-color photorefractive gratings in LiNbO(3).

@article{Guenther1997IntensityDA,
  title={Intensity dependence and white-light gating of two-color photorefractive gratings in LiNbO(3).},
  author={Harald Guenther and G{\'a}bor Wittmann and Roger M. Macfarlane and Ratnakar R Neurgaonkar},
  journal={Optics letters},
  year={1997},
  volume={22 17},
  pages={1305-7}
}
Photorefractive gratings have been written in Pr:LiNbO(3) 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… CONTINUE READING