Temporal cavity soliton interaction in passively mode-locked semiconductor lasers
- Vladimirov, Andrei G.
2020 Mathematics Subject Classification
- 78A60 37N20 78M35
2010 Physics and Astronomy Classification Scheme
- 42.65.-k 42.65.Re 42.60.Fc 42.65.Sf 42.65.Tg.
- Mode-locking, semiconductor laser, delay differential equation model, temporal cavity solitons
Weak interaction due to gain saturation and recovery of temporal cavity solitons in a delay differential model of a long cavity semiconductor laser is studied numerically and analytically using an asymptotic approach. It is shown that apart from usual soliton repulsion leading to a harmonic mode-locking regime a soliton attraction is also possible in a laser with nonzero linewidth enhancement factor. It is shown numerically that the attraction can lead either to a soliton merging or to a pulse bound state formation.