Abstract The propagation of spatial solitons is systematically investigated in nonlocal nonlinear media with an imprinted transverse periodic modulation of the refractive index. Based on the variational principle and the infinitesimal approximation of Maclaurin series expansion, we obtain an analytical solution of such nonlocal spatial solitons and an interesting result that the critical power for such solitons propagation is smaller than that in uniform nonlocal self-focusing media. It is found that there exist thresholds in modulation period and lattice depth for such solitons. A stable spatial soliton propagation is maintained with proper adjustment of the modulation period and the lattice depth.
Received: 07 April 2008
Revised: 17 September 2008
Accepted manuscript online:
(Phase conjugation; photorefractive and Kerr effects)
Fund: Project supported in part by the
National Natural Science Foundation of China (Grant Nos 60677030 and
60808002), the Specialized Research Fund for the Doctoral Program of
Higher Education, China (Grant No 20060280007), the Science and
Technology Commissio
Cite this article:
Ge Li-Juan(葛丽娟), Wang Qi(王奇), , Shen Ming(申明), Shi Jie-Long(施解龙), , Kong Qian(孔茜), and Hou Peng(侯鹏) Solitons in optical lattices with nonlocal nonlinearity 2009 Chin. Phys. B 18 616
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