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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.
Although the theory and principles of optical waveguides have been established for more than a century, the technologies have only been realized in recent decades. Optical Waveguides: From Theory to Applied Technologies combines the most relevant aspects of waveguide theory with the study of current detailed waveguiding technologies, in particular, photonic devices, telecommunication applications, and biomedical optics. With self-contained chapters written by well-known specialists, the book features both fundamentals and applications. The first three chapters examine the theoretical foundations and bases of planar optical waveguides as well as critical optical properties such as birefringen...
A discussion of the fundamental changes that occur when dynamical systems from the fields of nonlinear optics, solids, hydrodynamics and biophysics are scaled down to nanosize. The authors are leading scientists in the field and each of their contributions provides a broader introduction to the specific area of research. In so doing, they include both the experimental and theoretical point of view, focusing especially on the effects on the nonlinear dynamical behavior of scaling, stochasticity and quantum mechanics. For everybody working on the synthesis and integration of nanoscopic devices who sooner or later will have to learn how to deal with nonlinear effects.
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.
Die aktuellen Geschehnisse zeigen, dass eine rasche und entschiedene Wende hin zu einer nachhaltigen Entwicklung unumgänglich ist, wenn wir uns und unseren Planeten retten wollen. Gerade Unternehmen können hier einen großen Beitrag leisten. Trotzdem kommen wir oft nicht ins Handeln oder es fehlen die Mitstreiter:innen im Unternehmen. Das essential stellt die wichtigsten Strategien für eine erfolgreiche Veränderung hin zu mehr Nachhaltigkeit vor und zeigt, wie Mitstreiter:innen für diese Transformation gewonnen werden. Es geht konkret der Frage nach, was wir aus der Psychologie für die Nachhaltigkeitstransformation lernen können. So werden psychologische Theorien verständlich vorgestellt, inspirierende Fallbeispiele gezeigt und konkrete Impulse für die Umsetzung im eigenen Unternehmen (und privatem Umfeld) gegeben.
It provides the first comprehensive treatment of the Jesuits' poorly understood but remarkable revitalization of German religious art and culture - an accomplishment that would guide the direction of both religious life and subsequent German Baroque art."--BOOK JACKET.