Title

Observation of accelerating Wannier-Stark beams in optically induced photonic lattices

Authors

Authors

X. Y. Qi; K. G. Makris; R. El-Ganainy; P. Zhang; J. T. Bai; D. N. Christodoulides;Z. G. Chen

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

SEMICONDUCTOR SUPERLATTICES; ELECTRIC-FIELD; AIRY BEAMS; LOCALIZATION; GENERATION; Optics

Abstract

We generate optical beams analogous to the Wannier-Stark states in semiconductor superlattices and observe that the two main lobes of the WS beams self-bend (accelerate) along two opposite trajectories in a uniform one-dimensional photonic lattice. Such self-accelerating features exist only in the presence of the lattice and are not observed in a homogenous medium. Under the action of nonlinearity, however, the beam structure and acceleration cannot be preserved. Our experimental observations are in qualitative agreement with theoretical predictions. (C) 2014 Optical Society of America

Journal Title

Optics Letters

Volume

39

Issue/Number

4

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

1065

Last Page

1068

WOS Identifier

WOS:000331798000089

ISSN

0146-9592

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