Solitons in optical lattices with nonlocal nonlinearity |
| |
Authors: | Ge Li-Juan Wang Qi Shen Ming Shi Jie-Long Kong Qian and Hou Peng |
| |
Affiliation: | Department of Physics, Shanghai University, Shanghai
200444, China |
| |
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. |
| |
Keywords: | optical lattice solitons nonlocal nonlinearity |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |