Influence of a Time-Dependent Applied Electric Field on the Photocurrent in Photorefractive Materials
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...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:46431147005 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=46431147005 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas EMF Non Photo linear optics |
| Sumario: | 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. |
|---|