Fig. 1. Spatial distributions of the single-beam SRS growth rate: (a) s-polarized beam denoted by the green rectangle and (b) p-polarized beam denoted by the blue rectangle. The unit of the growth rate is

Fig. 2. Distributions of growth rates of two s-polarized beams (green rectangles) under four incidence angles: (a) , (b) , (c) and (d) . The resonant beam is shown with a bold rectangle. The modes with the maximum growth rate are marked by a white ‘X’.

Fig. 3. Distributions of growth rates of two p-polarized beams (blue rectangles) under four incidence angles: (a) , (b) , (c) and (d) .

Fig. 4. Distributions of growth rates of an s-polarized beam (green rectangle) and a p-polarized beam (blue rectangle): (a) the resonant beam is s-polarized (S-P interactions), while (b) the resonant beam is p-polarized (P-S interactions).

Fig. 5. Distributions of growth rates of four incident beams: (a)–(f) are varied in polarization configurations and incident angles as depicted in each plot.

Fig. 6. Distributions of growth rates of eight incident beams: (a)–(i) are varied in polarization configurations and incidence angles as described in the top and left.

Fig. 7. Particle-in-cell simulations of two-beam SRS in two-dimensions. The left-hand and middle columns show the time-averaged longitudinal and transverse field spectra, respectively: two s-polarized beams incident with (a) , (d) , and a p-polarized beam (upper) and an s-polarized beam (lower) incident with (g) . The figures in the right-hand column are the corresponding spatial distributions of scattered light, which are interpolated along circles in the left-hand figures. The center () indicates scattered light along the direction.