Spatial Modulation Suppression Concept for Multi‐Pump Interference Effect Mitigation in Stimulated Brillouin Amplification Beam Combining

ABSTRACT High pulse energy, high average power lasers with low spatial modulation have attracted many advanced applications in scientific research, and beam combination through stimulated Brillouin amplification (SBA) offers the potential for energy scaling with repetitive operation. However, attaining low‐modulation beam combining output remains a significant challenge due to the near‐field interference induced by the overlapping configuration of multiple pump beams with identical frequencies d