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Proceedings Paper

Negative refraction in tunable periodic photonic structures
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Paper Abstract

We predict theoretically and observe experimentally tunable refraction of beams in optically-induced lattices. By selective excitation of diferent Bloch modes in a tilted lattice, we observe positive and negative refraction for beams associated with the first and the second spectral band, respectively. We demonstrate tunability of the output beam position by dynamically adjusting the lattice depth. At higher laser intensities, the beam broadening due to difraction can be suppressed through nonlinear self-focusing while preserving the general steering properties.

Paper Details

Date Published: 12 October 2005
PDF: 7 pages
Proc. SPIE 5950, Photonic Crystals and Fibers, 59500C (12 October 2005); doi: 10.1117/12.622634
Show Author Affiliations
Christian R. Rosberg, Australian National Univ. (Australia)
Dragomir N. Neshev, Australian National Univ. (Australia)
Andrey A. Sukhorukov, Australian National Univ. (Australia)
Wieslaw Krolikowski, Australian National Univ. (Australia)
Yuri S. Kivshar, Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 5950:
Photonic Crystals and Fibers
Waclaw Urbanczyk; Bozena Jaskorzynska; Philip St. J. Russell, Editor(s)

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