Propiedades ópticas no lineales de nanocompuestos metal dieléctrico
Metal-dielectric nanocomposites are a artificial materials formed by metal nanoclusters embedded in a dielectric matrix which show effective optical properties radically different from those of their bulk constituents. Particularly, depending on their morphological characteristics, they can show thi...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/2691 |
| Acceso en línea: | http://hdl.handle.net/10261/2691 |
| Access Level: | acceso abierto |
| Palabra clave: | Nanocomposites Metal nanoclusters Metal-Dielectric Non-linear Refractive Index Non-linear Third-Order Optical Susceptibility Optical Switching Pulsed Laser Deposition |
| Sumario: | Metal-dielectric nanocomposites are a artificial materials formed by metal nanoclusters embedded in a dielectric matrix which show effective optical properties radically different from those of their bulk constituents. Particularly, depending on their morphological characteristics, they can show third-order susceptibilities with extremely large values which makes them very attractive for optical switching, among other applications. During the talk we will briefly review the fundamental mechanisms responsible for the third order non-linear response of these artificially structured materials as well as the experimental techniques allowing to measure their third order susceptibility. In the second part of the talk we will provide illustrative examples of the dependence of the non-linear susceptibility and its temporal and spectral evolution as a function of different parameters that can be controlled during the synthesis process. The results will be taken from a real system: Cu:Al2O3 thin film nanocomposites synthesized by pulsed laser deposition. As a general conclusion it will be shown that in real systems, the comprehension of the relation between the meso- and nano-scopic morphology of the composites and their effective non-linear susceptibility is a key issue for the design of high performance materials. |
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