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Proceedings Paper

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

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.526970
Show Author Affiliations
L. Mosquera, Univ. Estadual de Campinas (Brazil)
Jaime Frejlich, Univ. Estadual de Campinas (Brazil)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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