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 | Enthalten in: | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | Band: | 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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geprüft am 06.06.2024