Three-dimensional vector solitons and their stabilities in a Kerr medium with spatially inhomogeneous nonlinearity and transverse modulation
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Analytical vector spatiotemporal soliton solutions are derived in a spatially inhomogeneous Kerr nonlinear medium with a transverse modulation by means of a generic transformation. As an example, spatiotemporal soliton clusters such as Gaussian soliton clusters and radially symmetric soliton clusters in the media with the parabolic transverse modulation and without transverse modulation are constructed. The stability of vector spatiotemporal soliton clusters is investigated analytically and numerically, and results indicate that in the spatially inhomogeneous Kerr nonlinear medium, besides the stable fundamental solitons, stable higher-order mode exists below the critical propagation constant.
KeywordsVector spatiotemporal soliton Transverse modulation Kerr medium Stable region
This work was supported by the Zhejiang Provincial Natural Science Foundation of China (Grant Nos. LY17F050011 and LZ17A040001), the National Natural Science Foundation of China (Grant Nos. 11375007 and 11574271). Dr. Chao-Qing Dai is also sponsored by the Foundation of New Century “151 Talent Engineering” of Zhejiang Province of China and Youth Top-notch Talent Development and Training Program of Zhejiang A&F University. Dr. Rui-Pin Chen is also sponsored by the Science Research Foundation of Zhejiang Sci-Tech University (ZSTU) under Grant No. 14062078-Y.
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