Magister en Ciencias con mención en Física / En esta tesis se investigan de manera te orica, num erica y experimental, diversos
sistemas opticos discretos utilizando el modelo Tight-Binding. En particular, se analizan
las principales propiedades de la red fot onica de Lieb y la cinta tipo Grafeno, que
poseen banda plana, y cuyos estados localizados se observan mediante un montaje
basado en moduladores espaciales de luz. Por otro lado, se genera experimentalmente
la condici on inicial optima para excitar dipolos, cuyas propiedades se estudian
compar andolas con las del modo fundamental. Posteriormente, al mezclar redes con
banda plana y dipolos surge una nueva fenomenolog a, donde se muestra la observaci
on de anillos dipolares. Se analiza tambi en la cinta de Grafeno consider andola como
un sistema no lineal, calculando sus soluciones y buscando movilidad. Finalmente,
se discute de manera te orica el origen de los estados de banda plana y se presenta
un m etodo para hallarlos. / In this thesis, several optical discrete systems are investigated theoretically, numerically
and experimentally by means of the Tight-Binding model. In particular,
the main features of Lieb photonic lattices and Graphene ribbons are analized, and
the localized states belonging to their
at bands are observed in a SLMs-based setup.
On the other hand, the optimum initial condition to excite dipoles is generated
experimentally, and the properties of these states are studied and compared to the
ones of the fundamental modes. Next, by mixing
at band lattices and dipoles, new
phenomena arise, and the observation of a dipolar ring-like mode is demonstrated.
The Graphene-like ribbon is studied as a nonlinear system as well, where its solutions
are computed in the pursuit of mobility. Finally, the origin of
at-band states
is theoretically discussed and a procedure to nd them is presented. / nanciamiento entregado por el Nucleo Milenio
de Óptica Avanzada RC-130001 y la Beca de Pedagogía de Laboratorio otorgada por
el Departamento de Fisica de la Facultad de Ciencias de la Universidad de Chile.
| Identifer | oai:union.ndltd.org:UCHILE/oai:repositorio.uchile.cl:2250/150930 |
| Date | 09 1900 |
| Creators | Cantillano Carreño, Camilo Gonzalo |
| Contributors | Vicencio Poblete, Rodrigo, Clerc, Marcel, Orszag, Miguel, Cordero, Raul, Universidad de Chile. Facultad de Ciencias. Escuela de Posgrado |
| Publisher | Universidad de Chile |
| Source Sets | Universidad de Chile |
| Language | Spanish |
| Detected Language | English |
| Type | Tesis |
| Rights | Attribution-NonCommercial-NoDerivs 3.0 Chile, http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
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