Highly localized discrete quadratic solitons |
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Authors: | Iwanow Robert Stegeman George I Schiek Roland Pertsch Thomas Lederer Falk Min Yoohong Sohler Wolfgang |
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Institution: | Center for Research and Education in Optics and Lasers and Florida Photonics Center of Excellence, College of Optics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816, USA. iwanow@creol.ucf.edu |
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Abstract: | We observe highly localized solitons in periodically poled lithium niobate waveguide arrays close to phase matching for second-harmonic generation. With fundamental and second-harmonic input in one channel the response indicates two distinguishable propagation schemes. Depending on the relative phase between the two input waves, a self-trapped beam emerges, resembling closely either the in- or the out-of-phase quadratic eigenmode of a single waveguide. A stable soliton propagates when the input waves are in phase. |
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