Large amplitude photocurrent in photo-emf experiments in pure and doped absorbing photorefractive crystals

L. Mosquera; Jaime Frejlich

doi:10.1117/12.526970

19 November 2003 Large amplitude photocurrent in photo-emf experiments in pure and doped absorbing photorefractive crystals

L. Mosquera, Jaime Frejlich

Author Affiliations +

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.526970
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

We report a mathematical formulation that successfully describes the holographic photocurrent produced in photo-emf experiments, with large oscillation amplitudes, in strongly absorbing photorefractive materials. The large amplitude produces a sensible enhancement of the photocurrent signal and in this way facilitates measurements. Accounting for bulk light absorption of the sample is essential in order to adequately describe the experiment. We measure pure and doped potorefractive Bi₁₂TiO₂₀ (BTO) crystals and show that these data are in excellent agreement with theory. From data fitting we are able to determine some material's parameters.

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L. Mosquera and Jaime Frejlich "Large amplitude photocurrent in photo-emf experiments in pure and doped absorbing photorefractive crystals", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.526970

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