Observation of laser vortex solitons in a self-focusing semiconductor laser

Jimenez, J.; Noblet, Y; Paulau, P.V., Gomila, D.; Ackemann, T.
Journal of Optics 15, 044011 (1-10) (2013)

We report the observation of single and multiple vortex solitons in a self-focusing dissipative system, a broad-area vertical-cavity surface-emitting laser (VCSEL) with frequency-selective feedback by a volume Bragg grating. They are bistable and the transitions between different soliton structures are analysed. The observations qualitatively verify theoretical predictions based on simplified models for a semiconductor laser with frequency-selective feedback.

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