Origin of dark holographic scattering patterns in photorefractive crystals

Autor(en): Schwalenberg, S
Kratzig, E
Stichwörter: BARIUM-CALCIUM-TITANATE; BATIO3; NIOBATE; Optics; Physics; Physics, Applied; REFRACTIVE-INDEXES
Erscheinungsdatum: 2004
Herausgeber: SPRINGER
Journal: APPLIED PHYSICS B-LASERS AND OPTICS
Volumen: 79
Ausgabe: 4
Startseite: 423
Seitenende: 425
Zusammenfassung: 
We explain the origin of recently reported dark parametric holographic scattering patterns observed in photorefractive strontium-barium niobate (SBN) and barium-calcium titanate (BCT) crystals. Taking into account the model for parametric four-wave-mixing processes in photorefractive crystals, exponential gain factors are presented for the scattering patterns and compared with the gain for the scattering background. We interpret the dark scattering patterns as a result of counteracting energy-transfer processes.
ISSN: 09462171
DOI: 10.1007/s00340-004-1585-4

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