The European Physical Journal Special Topics

, Volume 203, Issue 1, pp 193–205 | Cite as

Self–propelled soliton collisions in a semiconductor cavity soliton laser

  • G. TissoniEmail author
  • K. M. Aghdami
  • M. Brambilla
  • F. Prati
Regular Article


Spontaneous soliton motion has been demonstrated in different systems supporting cavity solitons. Here we consider the case of a semiconductor laser with an intracavity saturable absorber, and study the interactions between self-propelled solitons when two of them collide or when they hit a localised defect in the material gain. According to the soliton velocity and impact parameter, destructive or repulsive collisions may take place between travelling solitons. On the other hand, a very rich variety of dynamical behaviors can be observed when a travelling soliton hits a material defect of comparable size. We observe soliton destruction, repulsive or attractive interaction and two trapped cases. The behavior is mainly determined by the gain contrast between the defect and the background.


Soliton European Physical Journal Special Topic Impact Parameter Saturable Absorber Dissipative Soliton 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© EDP Sciences and Springer 2012

Authors and Affiliations

  • G. Tissoni
    • 1
    Email author
  • K. M. Aghdami
    • 2
  • M. Brambilla
    • 3
  • F. Prati
    • 4
  1. 1.Institut Non Linéaire de NiceUniversité de Nice Sophia AntipolisValbonneFrance
  2. 2.Physics DepartmentPayame Noor UniversityTehranIran
  3. 3.CNISM and Dipartimento di Fisica InterateneoUniversità e Politecnico di BariBariItaly
  4. 4.CNISM and Dipartimento di Scienza e Alta TecnologiaUniversità dell’InsubriaComoItaly

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