We predict theoretically and observe experimentally multiband quadratic solitons in periodically poled lithium niobate waveguide arrays. We demonstrate an abrupt transition from unstaggered to staggered second harmonic phase profiles with increase of fundamental beam power.
© 2010 The Optical Society
F. Setzpfandt, A. A. Sukhorukov, D. N. Neshev, R. Schiek, A. Tünnermann, Y. S. Kivshar, and T. Pertsch, "Multiband Quadratic Solitons in Waveguide Arrays," in Advanced Photonics & Renewable Energy, OSA Technical Digest (CD) (Optical Society of America, 2010), paper NWC7.
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