Dynamic bulk photovoltaic effect in photorefractive barium calcium titanate

Autor(en): Korneev, N
Mayorga, D
Veenhuis, H
Buse, K
Kratzig, E
Stichwörter: CRYSTALS; Optics
Erscheinungsdatum: 1999
Herausgeber: OPTICAL SOC AMER
Journal: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volumen: 16
Ausgabe: 10
Startseite: 1725
Seitenende: 1729
Zusammenfassung: 
Oscillating photocurrents are generated in a photorefractive iron-doped barium calcium titanate crystal (Ba0.77Ca0.23TiO3; BCT) by illumination with an oscillating interference pattern. Non-steady-state photocurrents arise usually from the interaction of a space-charge field with an oscillating photoconductivity pattern. However, a second-harmonic signal of the oscillating photocurrents is observed in BCT, which is present without any space-charge field. The main features of the new effect can be explained by consideration of a dynamic, i.e., time-dependent, bulk photovoltaic effect. The effect might be useful for optically addressed memories or optical correlators. (C) 1999 Optical Society of America [S0740-3224(99)01710-5].
ISSN: 07403224
DOI: 10.1364/JOSAB.16.001725

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