Tesis doctoral de Marc Maymo Camos
Second order nonlinear interactions are, among, the most relevant nonlinear interactions between light and matter when one considers their applications. Such interactions are only efficient in noncentrosymmetric materials and materials or material structures that provide a phase matching mechanism. This is the case, for instance, in highly anisotropic crystals. However such anisotropy sets important limitations to the application scope of these materials. in the last decades, a large variety of inorganic crystals, such as, for instance, ln or ktp, have been used in optics devices. However, these inorganic materials have several drawbacks like their cost, processing difficulties and limitations to their flexibility and capability to hold new properties. Organic molecules may provide some alternatives, but the difficulties in getting a noncentrosymmetric organic crystal, large enough to hold an efficient nonlinear interaction, has restricted their applicability. Because the high nonlinearity of some organic molecules, one may consider surface nonlinear interaction as a good nonlinear mechanism for these molecules. Although the efficiency of surface interaction is low, when many of this surfaces interactions are coherently added, the whole process can be efficient. photonic crystals have the capability of controlling the propagation and generation of light. Such control is larger in the neighbourhood of a forbidden band. In fact, at the edge of the band it is possible to control the nonlinear interactions. The high number of interfaces present in the photonic crystal structure, where a quadratic nonlinear interaction may occur, and the band edge effects, make it interesting to focus our study into some of such second order nonlinear interaction. in this thesis, we present experimental and theoretical results related to different second order nonlinear interactions in the framework of nonlinear colloidal photonic crystals, and nonlinear opals. For the colloidal crys
Datos académicos de la tesis doctoral «Interaccio parametrica no lineal en materials amb nano-estructuracio ordenada«
- Título de la tesis: Interaccio parametrica no lineal en materials amb nano-estructuracio ordenada
- Autor: Marc Maymo Camos
- Universidad: Politécnica de catalunya
- Fecha de lectura de la tesis: 29/11/2007
Dirección y tribunal
- Director de la tesis
- Jordi Martorell Pena
- Tribunal
- Presidente del tribunal: ramon Vilaseca alavedra
- Francisco Javier Meseguer rico (vocal)
- Francisco Lopez calahorra (vocal)
- Miguel vicente Andrés bou (vocal)