Discrete diffraction and spatial gap solitons in photovoltaic LiNbO₃ waveguide arrays
Publication date
2005-05
Document type
Research article
Author
Chen, Feng
Stepić, Milutin
Rüter, Christian E.
Runde, Daniel
Shandarov, Vladimir
Manela, Ofer
Segev, Mordechai
Organisational unit
Technische Universität Clausthal
Scopus ID
Series or journal
Optics express
Periodical volume
13
Periodical issue
11
First page
4314
Last page
4324
Part of the university bibliography
Nein
Abstract
We investigate, experimentally and theoretically, light propagation in one-dimensional waveguide arrays exhibiting a saturable self-defocusing nonlinearity. We demonstrate low-intensity "discrete diffraction", and the high-intensity formation of spatial gap solitons arising from the first band of the transmission spectrum. The waveguide arrays are fabricated by titanium in-diffusion in a photorefractive copper-doped lithium niobate crystal, and the optical nonlinearity arises from the bulk photovoltaic effect. © 2005 Optical Society of America.
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