Title: Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination
Authors: Tan, Y.
Chen, Feng
Beličev, Petra P.
Stepić, Milutin
Maluckov, A.
Rüter, Christian E. 
Kip, Detlef  
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: Jun-2009
Publisher: Springer
Document Type: Article
Journal / Series / Working Paper (HSU): Applied Physics B Lasers and optics 
Volume: 95
Issue: 3
Page Start: 531
Page End: 535
Publisher Place: Berlin
Photovoltaic photorefractive binary waveguide arrays are fabricated by proton implantation and selective light illumination on top of an iron-doped near stoichiometric lithium niobate crystal. Linear discrete diffraction and nonlinear formation of gap solitons were investigated by single-channel excitation using Gaussian light beams coupled into either wide or narrow waveguide channels. The results show that, at low power, linear light propagation leads to discrete diffraction, whilst for higher input power the focusing mechanism dominates, finally leading to the formation of gap solitons in the binary waveguide arrays. Our simulation of light propagation based on a nonlinear beam propagation method confirms the experimental findings. © 2009 Springer-Verlag.
Organization Units (connected with the publication): Technische Universität Clausthal
URL: https://api.elsevier.com/content/abstract/scopus_id/67349100540
ISSN: 09462171
DOI: 10.1007/s00340-009-3467-2
Appears in Collections:Publications of the HSU Researchers (before HSU)

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