Pulsed Laser Deposition of Nanocomposite Thin Films for Photonic Aplications
Nanocomposite thin films formed by metal or semiconductor nanocrystals (NCs) embedded in a host exhibit interesting nonlinear optical properties related to the small size of the NCs (typically around 10 nm or below). These properties make these materials potential candidates for the development of a...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1999 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/280197 |
| Acceso en línea: | http://hdl.handle.net/10261/280197 |
| Access Level: | acceso abierto |
| Palabra clave: | Pulsed Laser Deposition Nanocomposites Metal Nanocrystals Thin films Non-linear optics Third Order Susceptibility |
| Sumario: | Nanocomposite thin films formed by metal or semiconductor nanocrystals (NCs) embedded in a host exhibit interesting nonlinear optical properties related to the small size of the NCs (typically around 10 nm or below). These properties make these materials potential candidates for the development of all-optical switching devices. The challenge is to produce nanocomposite materials with controlled and suitable characteristics. The present work aims to show that nanocomposite materials produced by pulsed laser deposition (PLD) might have superior structural and non-linear optical properties than those obtained by other techniques. This result will be illustrated in systems formed by metallic NCs (Bi, Cu) embedded in an A1203 host. Fundamental aspects related to the nucleation and growth mechanisms or the reactivity of the NCs with the host will be discussed. Finally, the excellent nonlinear properties of the PLD synthesized composites will be illustrated in the case of Cu:Al203 films, in which the dependence of the nonlinear third order optical susceptibility (x3)has been investigated as a function of the NCs size and values as large as iO esu have been achieved. |
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