Light Propagation In Tuneable Nonlinear Periodic Photonic Structures
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Light Propagation in Tuneable Nonlinear Periodic Photonic Structures
The action of light in periodic structures can be quite different to that in a homogenous medium. For example, while a nonlinear beam will spread out in a medium with a negative nonlinearity, in a periodic structure the beam is focused and a localised state is formed. In this thesis I will show my work on light propagation in tuneable nonlinear periodic photonic structures.
Nonlinearities in Periodic Structures and Metamaterials
Optical information processing of the future is associated with a new generation of compact nanoscale optical devices operating entirely with light. Moreover, adaptive features such as self-guiding, reconfiguration and switching become more and more important. Nonlinear devices offer an enormous potential for these applications. Consequently, innovative concepts for all-optical communication and information technologies based on nonlinear effects in photonic-crystal physics and nanoscale devices as metamaterials are of high interest. This book focuses on nonlinear optical phenomena in periodic media, such as photonic crystals, optically-induced, adaptive lattices, atomic lattices or metamaterials. The main purpose is to describe and overview new physical phenomena that result from the interplay between nonlinearities and structural periodicities and is a guide to actual and future developments for the expert reader in optical information processing, as well as in the physics of cold atoms in optical lattices.
Controlling Light in Optically Induced Photonic Lattices
Author: Bernd Terhalle
language: en
Publisher: Springer Science & Business Media
Release Date: 2011-01-28
Discrete periodic structures play an important role in physics, and have opened up an exciting new area of investigation in recent years. Questions relating to the control of light in such structures still represent a major challenge. It is this highly active field that is addressed in the present thesis. Using the model system of a photorefractive nonlinearity that allows one to simultaneously create and control photonic lattices by light, the author obtains a comprehensive picture of the control of nonlinear and quantum optics phenomena in photonic lattices. He describes and demonstrates experimentally for the first time resonant transitions in two-dimensional hexagonal lattices, including Rabi oscillations and Landau-Zener tunneling, as well as the direct control and exploitation of these transitions. A particular highlight of this thesis is the study of soliton-cluster switching and control of Zener tunneling.