“…In the case of injection locking, the parameters of the output beam are E = 100 mJ, Δν = 0.01 cm −1 , and τ = 100 ns, while more than 50% of the radiation energy is concentrated inside the diffraction angle [31]. In the case of double-pass lasing with the phase conjugation, the parameters are E = 50 mJ, Δν = 0.01-0.4 cm −1 , and τ = 30 ns, and the divergence is close to the diffractionlimited Q d [32]. When the pulse is compressed to a pulse duration of 1-2 ns upon stimulated Brillouin scattering, the parameters are E = 10 mJ, Δν = 0.01 cm −1 , and Q d [33].…”