Temporal dynamics of spatially localized waves in quadratic nonlinear waveguide arrays | Zendy

Frank Setzpfandt | Zendy; Alexander S. Solntsev | Zendy; Dragomir N. Neshev | Zendy; Thomas Pertsch | Zendy; W. Sohler | Zendy; Roland Schiek | Zendy

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Temporal dynamics of spatially localized waves in quadratic nonlinear waveguide arrays

Author(s) -

Frank Setzpfandt,

Alexander S. Solntsev,

Dragomir N. Neshev,

Thomas Pertsch,

W. Sohler,

Roland Schiek

Publication year - 2014

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.89.033863

Subject(s) - physics , waveguide , lithium niobate , pulse (music) , optics , nonlinear system , quadratic equation , dynamics (music) , soliton , self phase modulation , nonlinear optics , breakup , laser , computational physics , quantum mechanics , mechanics , acoustics , geometry , mathematics , detector

We study experimentally and theoretically the temporal dynamics of laser pulses propagating under conditions of spatial self-focusing in quadratic nonlinear waveguide arrays made from periodically poled lithium niobate. We observed temporal pulse breakup and temporal pulse narrowing and studied the dynamics of these effects in different waveguides. We investigated the influence of the frequency dependence of the mode indices as a limiting factor for soliton formation. Our experimental results are in good agreement with the theoretical model developed from coupled-mode theory, providing a detailed understanding of pulse dynamics and beam distribution in waveguide arrays with quadratic nonlinearity

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