Fig. 1. Schematic diagram of the propagation of a neat nonideal SGB through a nonlinear ZnSe crystal.

Fig. 2. (a) Intensity distributions and (b) propagation properties of a SGB through a nonlinear ZnSe crystal at different propagation distances.

Fig. 3. Intensity distributions of a nonideal SGB after traveling through three different nonlinear media with nonlinear refractive indices.

Fig. 4. (a) Intensity distributions and (b) deviation angle of a SGB after propagating through nonlinear media with various nonlinear refractive indices.

Fig. 5. (a) Intensity distributions and (b) deviation angle of SGBs after propagating through nonlinear media with different input beam intensities.

Fig. 6. Calculated results of the SGB after the crystal ZnSe with various thicknesses L.

Fig. 7. Intensity distribution of a SGB after traveling through nonlinear media with different ascent border widths wb.