Analytical Solution of High-order Mode Spatial Optical Solitons Propagating in the Strong Nonlocal Media
强非局域介质中传输光束的高阶模孤子解

In this paper, it is discussed that the optical beam (1+2D) on the suitable input power propagates in the strong nolocal nonlinear media,which is governed by the Snyder-Mitchell model in the cylindrical coordinate . An exact analytical solution with Laguerre-Gaussian form is obtained .It is shown that the solution in the Gaussian form is the lowest-order mode. It is found for the first time that the necklace-ring spatial soliton exists in the strong nonlocal media .