Anisotropic photonic lattices and discrete solitons in photorefractive media

We study experimentally two-dimensional periodic photonic lattices optically imprinted in photorefractive nonlinear media, and explore the effect of anisotropy on the induced refractive-index patterns. The orientation anisotropy is demonstrated by comparing square and diamond lattices, while the pol...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2007-02, Vol.86 (3), p.399-405
Main Authors: TERHALLE, B, DESYATNIKOV, A. S, BERSCH, C, TRAGER, D, TANG, L, IMBROCK, J, KIVSHAR, Y. S, DENZ, C
Format: Article
Language:English
Subjects:
Anisotropy
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Lattices
Media
Modulation
Nonlinear optics
Optical materials
Optical solitons
nonlinear guided waves
Optics
Other nonlinear optical materials
photorefractive and semiconductor materials
Photonics
Physics
Solitons
Two dimensional
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Summary:We study experimentally two-dimensional periodic photonic lattices optically imprinted in photorefractive nonlinear media, and explore the effect of anisotropy on the induced refractive-index patterns. The orientation anisotropy is demonstrated by comparing square and diamond lattices, while the polarization anisotropy is shown to distinguish ordinarily and extraordinarily polarized light. In particular, the extraordinarily polarized lattice induces much stronger refractive-index modulation for the same conditions. Finally, we exploit the photorefractive anisotropy to generate a quasi-one-dimensional refractive-index pattern for the observation of two-dimensional solitons and corroborate these experiments by numerical simulations.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-006-2508-3