In a recently published study,1 a confusion has been made on the definition of the size of the random phase plate (RPP) in the Fourier space: km. As shown in Fig. 1 of this reference, the RPP size is km×km, which implies km=k0/f#, where f#=F/D, D=N1/2d, F are the focal number, the diameter of the focusing length, and the focal length, respectively. Figures 3–8 of Ref. 1 and the associated discussions were produced with the definition, km=k0/2f#, wrong by factor of 1/2. Once corrected, the wavevector and frequency axis of these plots, normalized to km and kmcs, are rescaled by a factor of two, thus reading 2k/km instead of k/km and 2ω/kmcs instead of ω/kmcs. Regarding the discussions, the scattering of a wave outside the pump aperture propagates with angle θ>km/2k0 (and not θ>km/k0 as mentioned in the publication) and has a frequency shift of ω<kmcs/2 (and not <kmcs). In addition, the simulation of Sec. V C corresponds to ϵRPP=1, unlike what is described.

The laser and wave-mixing equations, the agreement with the different paraxial simulations, the important impact of the statistical correlation on the forward stimulated Brillouin scattering, and the conclusions remain unchanged.

1.
C.
Ruyer
,
V.
Tikhonchuk
, and
P.
Loiseau
,
Phys. Plasmas
31
,
052109
(
2024
).