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| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Sociedade Brasileira de Física
2014
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=46431147005 |
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Inhaltsangabe:
- Influence of a Time-Dependent Applied Electric Field on the Photocurrent in Photorefractive Materials L. M. Cervantes A. Zúñiga L. F. Magaña J. G. Murillo Física, Astronomía y Matemáticas EMF Non Photo linear optics From the differential material rate equations, we found an additional term to the usual expression of the pho- tocurrent, which appears only when a time-dependent external electric field is applied. This term influences the photocurrent in the material. We applied our equations to a Bi12SiO20 sample, under an applied sinusoidal electric field. This sample is illuminated with an oscillating interference pattern formed by two plane light waves, one of which is phase-modulated with frequency ω. We found good agreement with experimen- tal results. Besides, for this case, our prediction for the photo- current is better than the usual prediction of the photocurrent for low values of ω. 2014 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46431147005 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.44