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Collisions between chirped vector vortex solitons in nonlocal nonlinear media

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  • Wang, Zhi-Xuan
  • Zhang, Hui-Cong
  • Dai, Tian-Le
  • Fu, Xiao-Ying
  • Zhang, Zhong-Wei

Abstract

We numerically investigate coherent collisions for scalar solitons and vector vortex solitons in isotropic nonlocal nonlinear media. In scalar collisions, orbital angular momentum (OAM) stems from both chirp-induced linear momentum and angular momentum associated with topological charge. A noticeable effect is the conversion of angular momentum from topological form to orbital form. For vector collisions, (0,0) and (1,1) pairs exhibit centrally symmetric intensity distributions, while (0, 0) and (1,−1) pairs display mirror symmetry. Successive OAM exchange occurs between the two incoherently coupled pairs. The orthogonal collision outcome is governed by the power ratio: under vortex-mode dominance, a single-peaked potential prompts rapid fusion; conversely, under fundamental-mode dominance, a dual-peaked potential supports delayed fusion. These findings clarify key mechanisms of angular momentum conversion and exchange in vector soliton collisions.

Suggested Citation

  • Wang, Zhi-Xuan & Zhang, Hui-Cong & Dai, Tian-Le & Fu, Xiao-Ying & Zhang, Zhong-Wei, 2026. "Collisions between chirped vector vortex solitons in nonlocal nonlinear media," Chaos, Solitons & Fractals, Elsevier, vol. 208(P1).
    • Handle: RePEc:eee:chsofr:v:208:y:2026:i:p1:s0960077926002444
    DOI: 10.1016/j.chaos.2026.118103
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