| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000379522 |
| ISSN: | 0103-9733 |
| Authors: | Cervantes, L.M1 Zúñiga, A2 Magaña, L.F3 Murillo, J.G4 |
| Institutions: | 1Instituto Politécnico Nacional, Escuela Superior de Cómputo, México, Distrito Federal. México 2Instituto Politécnico Nacional, Escuela Superior de Física y Matemáticas, México, Distrito Federal. México 3Universidad Nacional Autónoma de México, Instituto de Física, México, Distrito Federal. México 4Centro de Investigación en Materiales Avanzados S.C., Chihuahua. México |
| Year: | 2014 |
| Season: | Ago |
| Volumen: | 44 |
| Number: | 4 |
| Pages: | 334-339 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | From the differential material rate equations, we found an additional term to the usual expression of the photocurrent, 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 experimental results. Besides, for this case, our prediction for the photocurrent is better than the usual prediction of the photocurrent for low values of ω |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Rejillas fotorrefractivas, Optica no lineal, Fotocorriente |
| Keyword: | Physics and astronomy, Condensed matter physics, Photorefractive gratings, Nonlinear optics, Photocurrent |
| Full text: | Texto completo (Ver PDF) |
