Origin of thermal fixing in photorefractive lithium niobate crystals
K Buse, S Breer, K Peithmann, S Kapphan, M Gao… - Physical Review B, 1997 - APS
Macroscopic light patterns are thermally fixed in photorefractive iron-or copper-doped LiNbO
3 crystals with different hydrogen concentrations. Spatially resolved absorption
measurements reveal unambiguously that migrating hydrogen ions compensate for the
space-charge fields at enhanced temperatures if the hydrogen concentration is large
enough. However, in crystals with small hydrogen concentrations thermal fixing is also
possible and another compensation mechanism appears. Partial depolarization of the …
3 crystals with different hydrogen concentrations. Spatially resolved absorption
measurements reveal unambiguously that migrating hydrogen ions compensate for the
space-charge fields at enhanced temperatures if the hydrogen concentration is large
enough. However, in crystals with small hydrogen concentrations thermal fixing is also
possible and another compensation mechanism appears. Partial depolarization of the …
[引用][C] Origin of thermal fixing in photorefractive lithlum niobate crystals
S Breer, K Peithmann, K Buse, S Kapphan… - conference on lasers …, 1997 - opg.optica.org
… 1 Photograph of a LiNb03:Cu crystal after thermal fixing of a macroscopic onedimensional
Gaussian intensity pattern. The caxis of the crystal points from the left to the right side. …
Thermal fixing experiments of macroscopic Gaussian intensity patterns are performed in iron-
or copper-doped LiNb03 crystals. Figure 1 shows a photograph of a LiNb03:Cu …
Gaussian intensity pattern. The caxis of the crystal points from the left to the right side. …
Thermal fixing experiments of macroscopic Gaussian intensity patterns are performed in iron-
or copper-doped LiNb03 crystals. Figure 1 shows a photograph of a LiNb03:Cu …
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