Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 30: Photonics 2

Q 30.3: Vortrag

Mittwoch, 16. März 2011, 11:00–11:15, SCH A118

Nonlinear Photonic Lattices based on Complex Nondiffracting Beams — •Falko Diebel, Patrick Rose, Martin Boguslawski, Julian Becker, and Cornelia Denz — Institut für Angewandte Physik and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany

The fascinating field of nonlinear light propagation in photonic lattices comprises a variety of effects caused by the interplay between periodicity and nonlinearity. Reams of recent publications account for the importance of this topic.

In particular, the technique of optical induction facilitates the creation of reconfigurable nonlinear photonic structures. In order to induce these one- or two-dimensional functional refractive index patterns, typically so-called nondiffracting beams are used. These beams are characterized by transversely modulated intensity patterns that are translation invariant in the direction of propagation. They can be expressed as solutions of the Helmholtz equation and – depending on the coordinate system – belong to different families, namely Bessel, Mathieu, Weber, and discrete nondiffracting beams.

In this contribution, we present a novel technique for the optical induction of all these complex photonic structures using only one spatial light modulator to manipulate the phase as well as the amplitude of the light field at the same time. The resulting lattices are subsequently analyzed in detail. These complex photonic structures are of particular interest since they offer exciting possibilities to engineer the diffraction properties of light and facilitate the existence of new soliton families.