Manipulating the spin of ultrarelativistic charged particle beams is a cornerstone of high-energy physics, yet its practical implementation has been limited by intrinsic energy dependence and a lack of universality across particle species. Here, we introduce the concept of a “unipolar surface wave spin rotator” that overcomes these barriers. In this scheme, a laser-driven, unipolar surface wave generates an extreme traveling electromagnetic impulse which imparts a unidirectional spin kick to a counterpropagating charged particle beam without requiring phase matching. We theoretically show that spin rotation from transverse to longitudinal polarization achieves $\sim 100\%$ efficiency within 25 mm for both leptons and ions, and across an energy range from GeV to TeV while preserving beam quality. This approach establishes a new paradigm for universal spin manipulator in future particle accelerators.

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